715655620609 has 4 divisors (see below), whose sum is σ = 740333400660. Its totient is φ = 690977840560.

The previous prime is 715655620607. The next prime is 715655620613. The reversal of 715655620609 is 906026556517.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 225746616384 + 489909004225 = 475128^2 + 699935^2 .

It is a cyclic number.

It is not a de Polignac number, because 715655620609 - 2¹ = 715655620607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (715655620601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12338889982 + ... + 12338890039.

It is an arithmetic number, because the mean of its divisors is an integer number (185083350165).

Almost surely, 2^715655620609 is an apocalyptic number.

It is an amenable number.

715655620609 is a deficient number, since it is larger than the sum of its proper divisors (24677780051).

715655620609 is a wasteful number, since it uses less digits than its factorization.

715655620609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24677780050.

The product of its (nonzero) digits is 3402000, while the sum is 52.

The spelling of 715655620609 in words is "seven hundred fifteen billion, six hundred fifty-five million, six hundred twenty thousand, six hundred nine".