40556813166 has 48 divisors (see below), whose sum is σ = 92760305040. Its totient is φ = 12771095040.

The previous prime is 40556813137. The next prime is 40556813183. The reversal of 40556813166 is 66131865504.

40556813166 is a `hidden beast` number, since 4 + 0 + 556 + 8 + 1 + 31 + 66 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47245 + ... + 288696.

It is an arithmetic number, because the mean of its divisors is an integer number (1932506355).

Almost surely, 2^40556813166 is an apocalyptic number.

40556813166 is an abundant number, since it is smaller than the sum of its proper divisors (52203491874).

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

40556813166 is a wasteful number, since it uses less digits than its factorization.

40556813166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336321 (or 336318 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 40556813166 in words is "forty billion, five hundred fifty-six million, eight hundred thirteen thousand, one hundred sixty-six".