78398234298544 has 20 divisors (see below), whose sum is σ = 151896933291024. Its totient is φ = 39199025707328.

The previous prime is 78398234298539. The next prime is 78398234298617. The reversal of 78398234298544 is 44589243289387.

It is a super-2 number, since 2×78398234298544² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1645314 + ... + 12629470.

Almost surely, 2^{78398234298544} is an apocalyptic number.

It is an amenable number.

78398234298544 is a deficient number, since it is larger than the sum of its proper divisors (73498698992480).

78398234298544 is a wasteful number, since it uses less digits than its factorization.

78398234298544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11430252 (or 11430246 counting only the distinct ones).

The product of its digits is 3344302080, while the sum is 76.

The spelling of 78398234298544 in words is "seventy-eight trillion, three hundred ninety-eight billion, two hundred thirty-four million, two hundred ninety-eight thousand, five hundred forty-four".