40042018557256 has 64 divisors (see below), whose sum is σ = 78301926236160. Its totient is φ = 19175888928000.

The previous prime is 40042018557223. The next prime is 40042018557257. The reversal of 40042018557256 is 65275581024004.

It is not an unprimeable number, because it can be changed into a prime (40042018557257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7185966 + ... + 11477026.

It is an arithmetic number, because the mean of its divisors is an integer number (1223467597440).

Almost surely, 2^{40042018557256} is an apocalyptic number.

It is an amenable number.

40042018557256 is a deficient number, since it is larger than the sum of its proper divisors (38259907678904).

40042018557256 is a wasteful number, since it uses less digits than its factorization.

40042018557256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4291486 (or 4291482 counting only the distinct ones).

The product of its (nonzero) digits is 2688000, while the sum is 49.

The spelling of 40042018557256 in words is "forty trillion, forty-two billion, eighteen million, five hundred fifty-seven thousand, two hundred fifty-six".