78179978181232 has 20 divisors (see below), whose sum is σ = 151873374512920. Its totient is φ = 38986849274688.

The previous prime is 78179978181199. The next prime is 78179978181241. The reversal of 78179978181232 is 23218187997187.

It is a super-2 number, since 2×78179978181232² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

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, 6446232243 + ... + 6446244370.

It is an arithmetic number, because the mean of its divisors is an integer number (7593668725646).

Almost surely, 2^{78179978181232} is an apocalyptic number.

It is an amenable number.

78179978181232 is a deficient number, since it is larger than the sum of its proper divisors (73693396331688).

78179978181232 is a wasteful number, since it uses less digits than its factorization.

78179978181232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12892477000 (or 12892476994 counting only the distinct ones).

The product of its digits is 170698752, while the sum is 73.

The spelling of 78179978181232 in words is "seventy-eight trillion, one hundred seventy-nine billion, nine hundred seventy-eight million, one hundred eighty-one thousand, two hundred thirty-two".