40457661534 has 24 divisors (see below), whose sum is σ = 87663409392. Its totient is φ = 13485096000.

The previous prime is 40457661527. The next prime is 40457661547. The reversal of 40457661534 is 43516675404.

40457661534 is a `hidden beast` number, since 4 + 0 + 4 + 57 + 6 + 61 + 534 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 40457661534.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 306159 + ... + 417909.

It is an arithmetic number, because the mean of its divisors is an integer number (3652642058).

Almost surely, 2^40457661534 is an apocalyptic number.

40457661534 is an abundant number, since it is smaller than the sum of its proper divisors (47205747858).

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

40457661534 is a wasteful number, since it uses less digits than its factorization.

40457661534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131872 (or 131869 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 45.

The spelling of 40457661534 in words is "forty billion, four hundred fifty-seven million, six hundred sixty-one thousand, five hundred thirty-four".