716529981312 has 80 divisors (see below), whose sum is σ = 2132381644800. Its totient is φ = 238843323648.

The previous prime is 716529981283. The next prime is 716529981329. The reversal of 716529981312 is 213189925617.

It is a happy number.

716529981312 is a `hidden beast` number, since 7 + 1 + 6 + 529 + 9 + 81 + 31 + 2 = 666.

It is a super-3 number, since 3×716529981312³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 34544512 + ... + 34565247.

It is an arithmetic number, because the mean of its divisors is an integer number (26654770560).

Almost surely, 2^716529981312 is an apocalyptic number.

716529981312 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

716529981312 is an abundant number, since it is smaller than the sum of its proper divisors (1415851663488).

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

716529981312 is an equidigital number, since it uses as much as digits as its factorization.

716529981312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69109785 (or 69109764 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 54.

The spelling of 716529981312 in words is "seven hundred sixteen billion, five hundred twenty-nine million, nine hundred eighty-one thousand, three hundred twelve".