40447742976 has 66 divisors (see below), whose sum is σ = 116792006682. Its totient is φ = 13482577920.

The previous prime is 40447742971. The next prime is 40447743043. The reversal of 40447742976 is 67924774404.

40447742976 is a `hidden beast` number, since 40 + 4 + 477 + 42 + 97 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 21601944576 + 18845798400 = 146976^2 + 137280^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40447742971) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2185215 + ... + 2203646.

Almost surely, 2^40447742976 is an apocalyptic number.

It is an amenable number.

40447742976 is an abundant number, since it is smaller than the sum of its proper divisors (76344263706).

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

40447742976 is a wasteful number, since it uses less digits than its factorization.

40447742976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4388887 (or 4388866 counting only the distinct ones).

The product of its (nonzero) digits is 9483264, while the sum is 54.

The spelling of 40447742976 in words is "forty billion, four hundred forty-seven million, seven hundred forty-two thousand, nine hundred seventy-six".