40784126085 has 24 divisors (see below), whose sum is σ = 70761000024. Its totient is φ = 21730452480.

The previous prime is 40784126057. The next prime is 40784126111. The reversal of 40784126085 is 58062148704.

40784126085 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 27133007841 + 13651118244 = 164721^2 + 116838^2 .

It is not a de Polignac number, because 40784126085 - 2⁸ = 40784125829 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 40784126085.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 392196 + ... + 485165.

It is an arithmetic number, because the mean of its divisors is an integer number (2948375001).

Almost surely, 2^40784126085 is an apocalyptic number.

40784126085 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40784126085 is a deficient number, since it is larger than the sum of its proper divisors (29976873939).

40784126085 is a wasteful number, since it uses less digits than its factorization.

40784126085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878405 (or 878402 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The spelling of 40784126085 in words is "forty billion, seven hundred eighty-four million, one hundred twenty-six thousand, eighty-five".