40263556136533 has 4 divisors (see below), whose sum is σ = 40290596807020. Its totient is φ = 40236515466048.

The previous prime is 40263556136483. The next prime is 40263556136561. The reversal of 40263556136533 is 33563165536204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15240770947249 + 25022785189284 = 3903943^2 + 5002278^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40263556136533 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 (40263556436533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13520333010 + ... + 13520335987.

It is an arithmetic number, because the mean of its divisors is an integer number (10072649201755).

Almost surely, 2^{40263556136533} is an apocalyptic number.

It is an amenable number.

40263556136533 is a deficient number, since it is larger than the sum of its proper divisors (27040670487).

40263556136533 is a wasteful number, since it uses less digits than its factorization.

40263556136533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27040670486.

The product of its (nonzero) digits is 17496000, while the sum is 52.

The spelling of 40263556136533 in words is "forty trillion, two hundred sixty-three billion, five hundred fifty-six million, one hundred thirty-six thousand, five hundred thirty-three".