78946272515 has 16 divisors (see below), whose sum is σ = 103586557536. Its totient is φ = 57282854400.

The previous prime is 78946272491. The next prime is 78946272553. The reversal of 78946272515 is 51527264987.

It is not a de Polignac number, because 78946272515 - 2³⁶ = 10226795779 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1633676 + ... + 1681305.

It is an arithmetic number, because the mean of its divisors is an integer number (6474159846).

Almost surely, 2^78946272515 is an apocalyptic number.

78946272515 is a deficient number, since it is larger than the sum of its proper divisors (24640285021).

78946272515 is a wasteful number, since it uses less digits than its factorization.

78946272515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3315430.

The product of its digits is 8467200, while the sum is 56.

The spelling of 78946272515 in words is "seventy-eight billion, nine hundred forty-six million, two hundred seventy-two thousand, five hundred fifteen".