40640961156 has 24 divisors (see below), whose sum is σ = 94839554880. Its totient is φ = 13545466272.

The previous prime is 40640961143. The next prime is 40640961161. The reversal of 40640961156 is 65116904604.

40640961156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 76011 + ... + 295058.

It is an arithmetic number, because the mean of its divisors is an integer number (3951648120).

Almost surely, 2^40640961156 is an apocalyptic number.

It is an amenable number.

40640961156 is an abundant number, since it is smaller than the sum of its proper divisors (54198593724).

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

40640961156 is a wasteful number, since it uses less digits than its factorization.

40640961156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380203 (or 380201 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 40640961156 in words is "forty billion, six hundred forty million, nine hundred sixty-one thousand, one hundred fifty-six".