995752090721 has 6 divisors (see below), whose sum is σ = 996889562550. Its totient is φ = 994615915296.

The previous prime is 995752090667. The next prime is 995752090747. The reversal of 995752090721 is 127090257599.

It can be written as a sum of positive squares in 3 ways, for example, as 759059137600 + 236692953121 = 871240^2 + 486511^2 .

It is not a de Polignac number, because 995752090721 - 2³⁰ = 994678348897 is a prime.

It is a super-2 number, since 2×995752090721² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (995752090121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 121805 + ... + 1416453.

It is an arithmetic number, because the mean of its divisors is an integer number (166148260425).

Almost surely, 2^995752090721 is an apocalyptic number.

It is an amenable number.

995752090721 is a deficient number, since it is larger than the sum of its proper divisors (1137471829).

995752090721 is an frugal number, since it uses more digits than its factorization.

995752090721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296403 (or 1295526 counting only the distinct ones).

The product of its (nonzero) digits is 3572100, while the sum is 56.

The spelling of 995752090721 in words is "nine hundred ninety-five billion, seven hundred fifty-two million, ninety thousand, seven hundred twenty-one".