41723121991 has 8 divisors (see below), whose sum is σ = 45335820800. Its totient is φ = 38252097720.

The previous prime is 41723121983. The next prime is 41723122013. The reversal of 41723121991 is 19912132714.

41723121991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 41723121991 - 2³ = 41723121983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41723121901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35418021 + ... + 35419198.

It is an arithmetic number, because the mean of its divisors is an integer number (5666977600).

Almost surely, 2^41723121991 is an apocalyptic number.

41723121991 is a deficient number, since it is larger than the sum of its proper divisors (3612698809).

41723121991 is a wasteful number, since it uses less digits than its factorization.

41723121991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70837269.

The product of its digits is 27216, while the sum is 40.

The spelling of 41723121991 in words is "forty-one billion, seven hundred twenty-three million, one hundred twenty-one thousand, nine hundred ninety-one".