40355240656556 has 48 divisors (see below), whose sum is σ = 80928054600960. Its totient is φ = 17248505757120.

The previous prime is 40355240656541. The next prime is 40355240656573. The reversal of 40355240656556 is 65565604255304.

It is a super-2 number, since 2×40355240656556² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37635491 + ... + 38692901.

It is an arithmetic number, because the mean of its divisors is an integer number (1686001137520).

Almost surely, 2^{40355240656556} is an apocalyptic number.

It is an amenable number.

40355240656556 is an abundant number, since it is smaller than the sum of its proper divisors (40572813944404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40355240656556 is a wasteful number, since it uses less digits than its factorization.

40355240656556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061094 (or 1061092 counting only the distinct ones).

The product of its (nonzero) digits is 64800000, while the sum is 56.

The spelling of 40355240656556 in words is "forty trillion, three hundred fifty-five billion, two hundred forty million, six hundred fifty-six thousand, five hundred fifty-six".