40777156164 has 12 divisors (see below), whose sum is σ = 95146697744. Its totient is φ = 13592385384.

The previous prime is 40777156073. The next prime is 40777156169. The reversal of 40777156164 is 46165177704.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (40777156169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1699048162 + ... + 1699048185.

Almost surely, 2^40777156164 is an apocalyptic number.

It is an amenable number.

40777156164 is an abundant number, since it is smaller than the sum of its proper divisors (54369541580).

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

40777156164 is a wasteful number, since it uses less digits than its factorization.

40777156164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3398096354 (or 3398096352 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 48.

The spelling of 40777156164 in words is "forty billion, seven hundred seventy-seven million, one hundred fifty-six thousand, one hundred sixty-four".