78132937915 has 8 divisors (see below), whose sum is σ = 93859169328. Its totient is φ = 62439921120.

The previous prime is 78132937903. The next prime is 78132937919. The reversal of 78132937915 is 51973923187.

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

It is a de Polignac number, because none of the positive numbers 2^k-78132937915 is a prime.

It is a super-2 number, since 2×78132937915² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78132937919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8298477 + ... + 8307886.

It is an arithmetic number, because the mean of its divisors is an integer number (11732396166).

Almost surely, 2^78132937915 is an apocalyptic number.

78132937915 is a deficient number, since it is larger than the sum of its proper divisors (15726231413).

78132937915 is a wasteful number, since it uses less digits than its factorization.

78132937915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16607309.

The product of its digits is 2857680, while the sum is 55.

The spelling of 78132937915 in words is "seventy-eight billion, one hundred thirty-two million, nine hundred thirty-seven thousand, nine hundred fifteen".