78168345015 has 8 divisors (see below), whose sum is σ = 125069352048. Its totient is φ = 41689784000.

The previous prime is 78168345007. The next prime is 78168345029. The reversal of 78168345015 is 51054386187.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78168345015 - 2³ = 78168345007 is a prime.

It is a super-2 number, since 2×78168345015² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2605611486 + ... + 2605611515.

It is an arithmetic number, because the mean of its divisors is an integer number (15633669006).

Almost surely, 2^78168345015 is an apocalyptic number.

78168345015 is a deficient number, since it is larger than the sum of its proper divisors (46901007033).

78168345015 is a wasteful number, since it uses less digits than its factorization.

78168345015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5211223009.

The product of its (nonzero) digits is 806400, while the sum is 48.

The spelling of 78168345015 in words is "seventy-eight billion, one hundred sixty-eight million, three hundred forty-five thousand, fifteen".