89866765432 has 8 divisors (see below), whose sum is σ = 168500185200. Its totient is φ = 44933382712.

The previous prime is 89866765409. The next prime is 89866765477. The reversal of 89866765432 is 23456766898.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×89866765432² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5616672832 + ... + 5616672847.

It is an arithmetic number, because the mean of its divisors is an integer number (21062523150).

Almost surely, 2^89866765432 is an apocalyptic number.

It is an amenable number.

89866765432 is a deficient number, since it is larger than the sum of its proper divisors (78633419768).

89866765432 is a wasteful number, since it uses less digits than its factorization.

89866765432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11233345685 (or 11233345681 counting only the distinct ones).

The product of its digits is 104509440, while the sum is 64.

The spelling of 89866765432 in words is "eighty-nine billion, eight hundred sixty-six million, seven hundred sixty-five thousand, four hundred thirty-two".