38615909139648 has 84 divisors (see below), whose sum is σ = 114784995397800. Its totient is φ = 12871969708032.

The previous prime is 38615909139623. The next prime is 38615909139679. The reversal of 38615909139648 is 84693190951683.

38615909139648 is a `hidden beast` number, since 3 + 8 + 61 + 5 + 90 + 91 + 396 + 4 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

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, 1241493873 + ... + 1241524976.

It is an arithmetic number, because the mean of its divisors is an integer number (1366488040450).

Almost surely, 2^{38615909139648} is an apocalyptic number.

It is an amenable number.

38615909139648 is an abundant number, since it is smaller than the sum of its proper divisors (76169086258152).

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

38615909139648 is an equidigital number, since it uses as much as digits as its factorization.

38615909139648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2483018876 (or 2483018854 counting only the distinct ones).

The product of its (nonzero) digits is 302330880, while the sum is 72.

The spelling of 38615909139648 in words is "thirty-eight trillion, six hundred fifteen billion, nine hundred nine million, one hundred thirty-nine thousand, six hundred forty-eight".