83995721946724 has 81 divisors (see below), whose sum is σ = 171430447907019. Its totient is φ = 35905949143680.

The previous prime is 83995721946709. The next prime is 83995721946761. The reversal of 83995721946724 is 42764912759938.

The square root of 83995721946724 is 9164918.

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

83995721946724 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 16094298532900 + 67901423413824 = 4011770^2 + 8240232^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 79166561154 + ... + 79166562214.

Almost surely, 2^{83995721946724} is an apocalyptic number.

83995721946724 is the 9164918-th square number.

It is an amenable number.

83995721946724 is an abundant number, since it is smaller than the sum of its proper divisors (87434725960295).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83995721946724 is an frugal number, since it uses more digits than its factorization.

83995721946724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3374 (or 1687 counting only the distinct ones).

The product of its digits is 1646023680, while the sum is 76.

The spelling of 83995721946724 in words is "eighty-three trillion, nine hundred ninety-five billion, seven hundred twenty-one million, nine hundred forty-six thousand, seven hundred twenty-four".