89161493508 has 72 divisors (see below), whose sum is σ = 230879667200. Its totient is φ = 29003002560.

The previous prime is 89161493467. The next prime is 89161493549. The reversal of 89161493508 is 80539416198.

89161493508 is a `hidden beast` number, since 8 + 91 + 6 + 1 + 49 + 3 + 508 = 666.

It is an interprime number because it is at equal distance from previous prime (89161493467) and next prime (89161493549).

It is a super-2 number, since 2×89161493508² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 119043 + ... + 438741.

Almost surely, 2^89161493508 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89161493508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115439833600).

89161493508 is an abundant number, since it is smaller than the sum of its proper divisors (141718173692).

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

89161493508 is a wasteful number, since it uses less digits than its factorization.

89161493508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319897 (or 319892 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The spelling of 89161493508 in words is "eighty-nine billion, one hundred sixty-one million, four hundred ninety-three thousand, five hundred eight".