89887174181 has 4 divisors (see below), whose sum is σ = 102728199072. Its totient is φ = 77046149292.

The previous prime is 89887174171. The next prime is 89887174183. The reversal of 89887174181 is 18147178898.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-89887174181 is a prime.

It is a super-2 number, since 2×89887174181² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89887174183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6420512435 + ... + 6420512448.

It is an arithmetic number, because the mean of its divisors is an integer number (25682049768).

Almost surely, 2^89887174181 is an apocalyptic number.

It is an amenable number.

89887174181 is a deficient number, since it is larger than the sum of its proper divisors (12841024891).

89887174181 is a wasteful number, since it uses less digits than its factorization.

89887174181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12841024890.

The product of its digits is 7225344, while the sum is 62.

The spelling of 89887174181 in words is "eighty-nine billion, eight hundred eighty-seven million, one hundred seventy-four thousand, one hundred eighty-one".