95005198137721 has 3 divisors (see below), whose sum is σ = 95005207884783. Its totient is φ = 95005188390660.

The previous prime is 95005198137713. The next prime is 95005198137737. The reversal of 95005198137721 is 12773189150059.

The square root of 95005198137721 is 9747061.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 81746715049321 + 13258483088400 = 9041389^2 + 3641220^2 .

It is not a de Polignac number, because 95005198137721 - 2³ = 95005198137713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (95005198131721) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4873531 + ... + 14620591.

It is an arithmetic number, because the mean of its divisors is an integer number (31668402628261).

Almost surely, 2^{95005198137721} is an apocalyptic number.

95005198137721 is the 9747061-st square number.

95005198137721 is the 4873531-st centered octagonal number.

It is an amenable number.

95005198137721 is a deficient number, since it is larger than the sum of its proper divisors (9747062).

95005198137721 is an frugal number, since it uses more digits than its factorization.

95005198137721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19494122 (or 9747061 counting only the distinct ones).

The product of its (nonzero) digits is 4762800, while the sum is 58.

The spelling of 95005198137721 in words is "ninety-five trillion, five billion, one hundred ninety-eight million, one hundred thirty-seven thousand, seven hundred twenty-one".