78716122889292 has 72 divisors (see below), whose sum is σ = 235243585668000. Its totient is φ = 21714792519168.

The previous prime is 78716122889233. The next prime is 78716122889311. The reversal of 78716122889292 is 29298822161787.

78716122889292 is a `hidden beast` number, since 7 + 87 + 161 + 2 + 28 + 89 + 292 = 666.

78716122889292 is digitally balanced in base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×78716122889292² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78716122889292.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5385605917 + ... + 5385620532.

Almost surely, 2^{78716122889292} is an apocalyptic number.

It is an amenable number.

78716122889292 is an abundant number, since it is smaller than the sum of its proper divisors (156527462778708).

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

78716122889292 is a wasteful number, since it uses less digits than its factorization.

78716122889292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10771226495 (or 10771226490 counting only the distinct ones).

The product of its digits is 195084288, while the sum is 72.

The spelling of 78716122889292 in words is "seventy-eight trillion, seven hundred sixteen billion, one hundred twenty-two million, eight hundred eighty-nine thousand, two hundred ninety-two".