715393081921 has 16 divisors (see below), whose sum is σ = 852322157568. Its totient is φ = 587538216000.

The previous prime is 715393081861. The next prime is 715393081973. The reversal of 715393081921 is 129180393517.

It is a cyclic number.

It is not a de Polignac number, because 715393081921 - 2³⁷ = 577954128449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (715393081021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16298590 + ... + 16342423.

It is an arithmetic number, because the mean of its divisors is an integer number (53270134848).

Almost surely, 2^715393081921 is an apocalyptic number.

It is an amenable number.

715393081921 is a deficient number, since it is larger than the sum of its proper divisors (136929075647).

715393081921 is a wasteful number, since it uses less digits than its factorization.

715393081921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32641152.

The product of its (nonzero) digits is 408240, while the sum is 49.

The spelling of 715393081921 in words is "seven hundred fifteen billion, three hundred ninety-three million, eighty-one thousand, nine hundred twenty-one".