89190986580 has 36 divisors (see below), whose sum is σ = 270545993172. Its totient is φ = 23784263040.

The previous prime is 89190986567. The next prime is 89190986587. The reversal of 89190986580 is 8568909198.

It can be written as a sum of positive squares in 2 ways, for example, as 9416373444 + 79774613136 = 97038^2 + 282444^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×89190986580² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89190986587) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 247752561 + ... + 247752920.

It is an arithmetic number, because the mean of its divisors is an integer number (7515166477).

Almost surely, 2^89190986580 is an apocalyptic number.

It is an amenable number.

89190986580 is an abundant number, since it is smaller than the sum of its proper divisors (181355006592).

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

89190986580 is a wasteful number, since it uses less digits than its factorization.

89190986580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495505496 (or 495505491 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 63.

The spelling of 89190986580 in words is "eighty-nine billion, one hundred ninety million, nine hundred eighty-six thousand, five hundred eighty".