78349669524 has 48 divisors (see below), whose sum is σ = 232147171200. Its totient is φ = 22385619648.

The previous prime is 78349669507. The next prime is 78349669543. The reversal of 78349669524 is 42596694387.

78349669524 is a `hidden beast` number, since 7 + 8 + 3 + 49 + 6 + 69 + 524 = 666.

It is a super-2 number, since 2×78349669524² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51817809 + ... + 51819320.

It is an arithmetic number, because the mean of its divisors is an integer number (4836399400).

Almost surely, 2^78349669524 is an apocalyptic number.

It is an amenable number.

78349669524 is an abundant number, since it is smaller than the sum of its proper divisors (153797501676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78349669524 is a wasteful number, since it uses less digits than its factorization.

78349669524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103637149 (or 103637141 counting only the distinct ones).

The product of its digits is 78382080, while the sum is 63.

The spelling of 78349669524 in words is "seventy-eight billion, three hundred forty-nine million, six hundred sixty-nine thousand, five hundred twenty-four".