715917680640 has 336 divisors, whose sum is σ = 2589626995488. Its totient is φ = 182608723968.

The previous prime is 715917680609. The next prime is 715917680671. The reversal of 715917680640 is 46086719517.

715917680640 is a `hidden beast` number, since 7 + 1 + 591 + 7 + 6 + 8 + 0 + 6 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (715917680609) and next prime (715917680671).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8436502 + ... + 8520938.

Almost surely, 2^715917680640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 715917680640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1294813497744).

715917680640 is an abundant number, since it is smaller than the sum of its proper divisors (1873709314848).

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

715917680640 is a wasteful number, since it uses less digits than its factorization.

715917680640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84497 (or 84470 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 54.

The spelling of 715917680640 in words is "seven hundred fifteen billion, nine hundred seventeen million, six hundred eighty thousand, six hundred forty".