47878647615 has 40 divisors (see below), whose sum is σ = 86301223008. Its totient is φ = 25394160960.

The previous prime is 47878647601. The next prime is 47878647631. The reversal of 47878647615 is 51674687874.

47878647615 is a `hidden beast` number, since 4 + 7 + 8 + 7 + 8 + 6 + 4 + 7 + 615 = 666.

It is not a de Polignac number, because 47878647615 - 2²⁸ = 47610212159 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 253267 + ... + 399876.

Almost surely, 2^47878647615 is an apocalyptic number.

47878647615 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

47878647615 is a deficient number, since it is larger than the sum of its proper divisors (38422575393).

47878647615 is a wasteful number, since it uses less digits than its factorization.

47878647615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653341 (or 653332 counting only the distinct ones).

The product of its digits is 63221760, while the sum is 63.

The spelling of 47878647615 in words is "forty-seven billion, eight hundred seventy-eight million, six hundred forty-seven thousand, six hundred fifteen".