89150613561 has 9 divisors (see below), whose sum is σ = 128774402341. Its totient is φ = 59433145212.

The previous prime is 89150613493. The next prime is 89150613577. The reversal of 89150613561 is 16531605198.

The square root of 89150613561 is 298581.

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

89150613561 is a `hidden beast` number, since 8 + 9 + 1 + 506 + 135 + 6 + 1 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 89150613561 - 2¹⁷ = 89150482489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89150113561) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 845980 + ... + 945506.

Almost surely, 2^89150613561 is an apocalyptic number.

89150613561 is the 298581-st square number.

89150613561 is the 149291-st centered octagonal number.

It is an amenable number.

89150613561 is a deficient number, since it is larger than the sum of its proper divisors (39623788780).

89150613561 is an frugal number, since it uses more digits than its factorization.

89150613561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199060 (or 99530 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 45.

The spelling of 89150613561 in words is "eighty-nine billion, one hundred fifty million, six hundred thirteen thousand, five hundred sixty-one".