78712939662 has 32 divisors (see below), whose sum is σ = 189384518400. Its totient is φ = 21305757888.

The previous prime is 78712939637. The next prime is 78712939673. The reversal of 78712939662 is 26693921787.

It is a junction number, because it is equal to n+sod(n) for n = 78712939596 and 78712939605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49318087 + ... + 49319682.

It is an arithmetic number, because the mean of its divisors is an integer number (5918266200).

Almost surely, 2^78712939662 is an apocalyptic number.

78712939662 is an abundant number, since it is smaller than the sum of its proper divisors (110671578738).

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

78712939662 is a wasteful number, since it uses less digits than its factorization.

78712939662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98637800.

The product of its digits is 13716864, while the sum is 60.

The spelling of 78712939662 in words is "seventy-eight billion, seven hundred twelve million, nine hundred thirty-nine thousand, six hundred sixty-two".