40550604656 has 40 divisors (see below), whose sum is σ = 82057925040. Its totient is φ = 19392943104.

The previous prime is 40550604649. The next prime is 40550604709. The reversal of 40550604656 is 65640605504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 545561 + ... + 615416.

It is an arithmetic number, because the mean of its divisors is an integer number (2051448126).

Almost surely, 2^40550604656 is an apocalyptic number.

It is an amenable number.

40550604656 is an abundant number, since it is smaller than the sum of its proper divisors (41507320384).

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

40550604656 is a wasteful number, since it uses less digits than its factorization.

40550604656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161081 (or 1161075 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 40550604656 in words is "forty billion, five hundred fifty million, six hundred four thousand, six hundred fifty-six".