40400651572 has 12 divisors (see below), whose sum is σ = 74860030980. Its totient is φ = 19012071296.

The previous prime is 40400651567. The next prime is 40400651597. The reversal of 40400651572 is 27515600404.

It can be written as a sum of positive squares in 2 ways, for example, as 37792915216 + 2607736356 = 194404^2 + 51066^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297063547 + ... + 297063682.

It is an arithmetic number, because the mean of its divisors is an integer number (6238335915).

Almost surely, 2^40400651572 is an apocalyptic number.

It is an amenable number.

40400651572 is a deficient number, since it is larger than the sum of its proper divisors (34459379408).

40400651572 is a wasteful number, since it uses less digits than its factorization.

40400651572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594127250 (or 594127248 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The spelling of 40400651572 in words is "forty billion, four hundred million, six hundred fifty-one thousand, five hundred seventy-two".