990092661156 has 81 divisors (see below), whose sum is σ = 2515094343489. Its totient is φ = 328408981632.

The previous prime is 990092661127. The next prime is 990092661179. The reversal of 990092661156 is 651166290099.

The square root of 990092661156 is 995034.

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

It can be written as a sum of positive squares in only one way, i.e., 111028904100 + 879063757056 = 333210^2 + 937584^2 .

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, 2286587916 + ... + 2286588348.

Almost surely, 2^990092661156 is an apocalyptic number.

990092661156 is the 995034-th square number.

It is an amenable number.

990092661156 is an abundant number, since it is smaller than the sum of its proper divisors (1525001682333).

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

990092661156 is an equidigital number, since it uses as much as digits as its factorization.

990092661156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1642 (or 821 counting only the distinct ones).

The product of its (nonzero) digits is 1574640, while the sum is 54.

The spelling of 990092661156 in words is "nine hundred ninety billion, ninety-two million, six hundred sixty-one thousand, one hundred fifty-six".