78513054942969 has 24 divisors (see below), whose sum is σ = 114400027901952. Its totient is φ = 51884776540800.

The previous prime is 78513054942961. The next prime is 78513054943013. The reversal of 78513054942969 is 96924945031587.

78513054942969 is a `hidden beast` number, since 7 + 8 + 5 + 1 + 30 + 549 + 42 + 9 + 6 + 9 = 666.

It is not a de Polignac number, because 78513054942969 - 2³ = 78513054942961 is a prime.

It is a super-2 number, since 2×78513054942969² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78513054942897 and 78513054942906.

It is not an unprimeable number, because it can be changed into a prime (78513054942961) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28523824 + ... + 31155009.

It is an arithmetic number, because the mean of its divisors is an integer number (4766667829248).

It is a 1-persistent number, because it is pandigital, but 2⋅78513054942969 = 157026109885938 is not.

Almost surely, 2^{78513054942969} is an apocalyptic number.

It is an amenable number.

78513054942969 is a deficient number, since it is larger than the sum of its proper divisors (35886972958983).

78513054942969 is a wasteful number, since it uses less digits than its factorization.

78513054942969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59680117 (or 59680114 counting only the distinct ones).

The product of its (nonzero) digits is 587865600, while the sum is 72.

The spelling of 78513054942969 in words is "seventy-eight trillion, five hundred thirteen billion, fifty-four million, nine hundred forty-two thousand, nine hundred sixty-nine".