89690521236 has 12 divisors (see below), whose sum is σ = 209277882912. Its totient is φ = 29896840408.

The previous prime is 89690521223. The next prime is 89690521241. The reversal of 89690521236 is 63212509698.

It is a tau number, because it is divible by the number of its divisors (12).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3737105040 + ... + 3737105063.

It is an arithmetic number, because the mean of its divisors is an integer number (17439823576).

Almost surely, 2^89690521236 is an apocalyptic number.

It is an amenable number.

89690521236 is an abundant number, since it is smaller than the sum of its proper divisors (119587361676).

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

89690521236 is a wasteful number, since it uses less digits than its factorization.

89690521236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7474210110 (or 7474210108 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 51.

The spelling of 89690521236 in words is "eighty-nine billion, six hundred ninety million, five hundred twenty-one thousand, two hundred thirty-six".