78999151412 has 12 divisors (see below), whose sum is σ = 140591710560. Its totient is φ = 38830091256.

The previous prime is 78999151409. The next prime is 78999151433. The reversal of 78999151412 is 21415199987.

It is a happy number.

It is a super-2 number, since 2×78999151412² (a number of 23 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, 167370848 + ... + 167371319.

It is an arithmetic number, because the mean of its divisors is an integer number (11715975880).

Almost surely, 2^78999151412 is an apocalyptic number.

It is an amenable number.

78999151412 is a deficient number, since it is larger than the sum of its proper divisors (61592559148).

78999151412 is a wasteful number, since it uses less digits than its factorization.

78999151412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334742230 (or 334742228 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 56.

The spelling of 78999151412 in words is "seventy-eight billion, nine hundred ninety-nine million, one hundred fifty-one thousand, four hundred twelve".