40553216643642 has 32 divisors (see below), whose sum is σ = 81185020407360. Its totient is φ = 13504645023360.

The previous prime is 40553216643629. The next prime is 40553216643697. The reversal of 40553216643642 is 24634661235504.

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, 40372542 + ... + 41364822.

It is an arithmetic number, because the mean of its divisors is an integer number (2537031887730).

Almost surely, 2^{40553216643642} is an apocalyptic number.

40553216643642 is an abundant number, since it is smaller than the sum of its proper divisors (40631803763718).

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

40553216643642 is a wasteful number, since it uses less digits than its factorization.

40553216643642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998878.

The product of its (nonzero) digits is 12441600, while the sum is 51.

The spelling of 40553216643642 in words is "forty trillion, five hundred fifty-three billion, two hundred sixteen million, six hundred forty-three thousand, six hundred forty-two".