78747830331 has 16 divisors (see below), whose sum is σ = 111537254400. Its totient is φ = 49279179168.

The previous prime is 78747830299. The next prime is 78747830333. The reversal of 78747830331 is 13303874787.

It is a happy number.

It is not a de Polignac number, because 78747830331 - 2⁵ = 78747830299 is a prime.

It is a super-2 number, since 2×78747830331² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78747830333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6331131 + ... + 6343556.

It is an arithmetic number, because the mean of its divisors is an integer number (6971078400).

Almost surely, 2^78747830331 is an apocalyptic number.

78747830331 is a deficient number, since it is larger than the sum of its proper divisors (32789424069).

78747830331 is a wasteful number, since it uses less digits than its factorization.

78747830331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12674818.

The product of its (nonzero) digits is 2370816, while the sum is 51.

The spelling of 78747830331 in words is "seventy-eight billion, seven hundred forty-seven million, eight hundred thirty thousand, three hundred thirty-one".