40478687504 has 20 divisors (see below), whose sum is σ = 78430838364. Its totient is φ = 20238471168.

The previous prime is 40478687479. The next prime is 40478687507. The reversal of 40478687504 is 40578687404.

It can be written as a sum of positive squares in 2 ways, for example, as 12705798400 + 27772889104 = 112720^2 + 166652^2 .

It is not an unprimeable number, because it can be changed into a prime (40478687507) 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, 497504 + ... + 573120.

Almost surely, 2^40478687504 is an apocalyptic number.

It is an amenable number.

40478687504 is a deficient number, since it is larger than the sum of its proper divisors (37952150860).

40478687504 is a wasteful number, since it uses less digits than its factorization.

40478687504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109082 (or 109076 counting only the distinct ones).

The product of its (nonzero) digits is 6021120, while the sum is 53.

The spelling of 40478687504 in words is "forty billion, four hundred seventy-eight million, six hundred eighty-seven thousand, five hundred four".