715305566081 has 4 divisors (see below), whose sum is σ = 717331927812. Its totient is φ = 713279204352.

The previous prime is 715305566029. The next prime is 715305566083. The reversal of 715305566081 is 180665503517.

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 340841121856 + 374464444225 = 583816^2 + 611935^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-715305566081 is a prime.

It is a super-2 number, since 2×715305566081² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (715305566083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1013180336 + ... + 1013181041.

It is an arithmetic number, because the mean of its divisors is an integer number (179332981953).

Almost surely, 2^715305566081 is an apocalyptic number.

It is an amenable number.

715305566081 is a deficient number, since it is larger than the sum of its proper divisors (2026361731).

715305566081 is a wasteful number, since it uses less digits than its factorization.

715305566081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2026361730.

The product of its (nonzero) digits is 756000, while the sum is 47.

The spelling of 715305566081 in words is "seven hundred fifteen billion, three hundred five million, five hundred sixty-six thousand, eighty-one".