78469471015 has 16 divisors (see below), whose sum is σ = 101707639488. Its totient is φ = 57774721536.

The previous prime is 78469471001. The next prime is 78469471039. The reversal of 78469471015 is 51017496487.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 78469471015 - 2¹⁷ = 78469339943 is a prime.

It is a congruent number.

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, 1769227 + ... + 1813036.

It is an arithmetic number, because the mean of its divisors is an integer number (6356727468).

Almost surely, 2^78469471015 is an apocalyptic number.

78469471015 is a deficient number, since it is larger than the sum of its proper divisors (23238168473).

78469471015 is a wasteful number, since it uses less digits than its factorization.

78469471015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3582618.

The product of its (nonzero) digits is 1693440, while the sum is 52.

The spelling of 78469471015 in words is "seventy-eight billion, four hundred sixty-nine million, four hundred seventy-one thousand, fifteen".