89731400265 has 80 divisors (see below), whose sum is σ = 173561602368. Its totient is φ = 44089640064.

The previous prime is 89731400261. The next prime is 89731400327. The reversal of 89731400265 is 56200413798.

89731400265 is a nontrivial binomial coefficient, being equal to C(423631, 2).

It is not a de Polignac number, because 89731400265 - 2² = 89731400261 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 89731400265.

It is not an unprimeable number, because it can be changed into a prime (89731400261) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2737302 + ... + 2769888.

It is a 2-persistent number, because it is pandigital, and so is 2⋅89731400265 = 179462800530, but 3⋅89731400265 = 269194200795 is not.

Almost surely, 2^89731400265 is an apocalyptic number.

89731400265 is the 423630-th triangular number.

It is an amenable number.

89731400265 is a deficient number, since it is larger than the sum of its proper divisors (83830202103).

89731400265 is a wasteful number, since it uses less digits than its factorization.

89731400265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33140 (or 33131 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 89731400265 in words is "eighty-nine billion, seven hundred thirty-one million, four hundred thousand, two hundred sixty-five".