89612135639 has 4 divisors (see below), whose sum is σ = 96505376856. Its totient is φ = 82718894424.

The previous prime is 89612135633. The next prime is 89612135659. The reversal of 89612135639 is 93653121698.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 89612135639 - 2⁸ = 89612135383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89612135633) 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, 3446620589 + ... + 3446620614.

It is an arithmetic number, because the mean of its divisors is an integer number (24126344214).

Almost surely, 2^89612135639 is an apocalyptic number.

89612135639 is a deficient number, since it is larger than the sum of its proper divisors (6893241217).

89612135639 is a wasteful number, since it uses less digits than its factorization.

89612135639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6893241216.

The product of its digits is 2099520, while the sum is 53.

The spelling of 89612135639 in words is "eighty-nine billion, six hundred twelve million, one hundred thirty-five thousand, six hundred thirty-nine".