715365585421 has 2 divisors, whose sum is σ = 715365585422. Its totient is φ = 715365585420.

The previous prime is 715365585379. The next prime is 715365585527. The reversal of 715365585421 is 124585563517.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 519480562500 + 195885022921 = 720750^2 + 442589^2 .

It is a cyclic number.

It is not a de Polignac number, because 715365585421 - 2¹⁹ = 715365061133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (715365525421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 357682792710 + 357682792711.

It is an arithmetic number, because the mean of its divisors is an integer number (357682792711).

Almost surely, 2^715365585421 is an apocalyptic number.

It is an amenable number.

715365585421 is a deficient number, since it is larger than the sum of its proper divisors (1).

715365585421 is an equidigital number, since it uses as much as digits as its factorization.

715365585421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040000, while the sum is 52.

The spelling of 715365585421 in words is "seven hundred fifteen billion, three hundred sixty-five million, five hundred eighty-five thousand, four hundred twenty-one".