712128316986 has 24 divisors (see below), whose sum is σ = 1543059060660. Its totient is φ = 237358509696.

The previous prime is 712128316957. The next prime is 712128317009. The reversal of 712128316986 is 689613821217.

712128316986 is a `hidden beast` number, since 7 + 121 + 283 + 169 + 86 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 696421961361 + 15706355625 = 834519^2 + 125325^2 .

It is a super-2 number, since 2×712128316986² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1215601 + ... + 1703508.

Almost surely, 2^712128316986 is an apocalyptic number.

712128316986 is an abundant number, since it is smaller than the sum of its proper divisors (830930743674).

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

712128316986 is a wasteful number, since it uses less digits than its factorization.

712128316986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2932670 (or 2932667 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The spelling of 712128316986 in words is "seven hundred twelve billion, one hundred twenty-eight million, three hundred sixteen thousand, nine hundred eighty-six".