90217489365 has 80 divisors (see below), whose sum is σ = 163994688000. Its totient is φ = 47444237568.

The previous prime is 90217489337. The next prime is 90217489379. The reversal of 90217489365 is 56398471209.

90217489365 is a `hidden beast` number, since 90 + 2 + 17 + 489 + 3 + 65 = 666.

It is not a de Polignac number, because 90217489365 - 2⁵ = 90217489333 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 9965361 + ... + 9974409.

It is an arithmetic number, because the mean of its divisors is an integer number (2049933600).

It is a 1-persistent number, because it is pandigital, but 2⋅90217489365 = 180434978730 is not.

Almost surely, 2^90217489365 is an apocalyptic number.

It is an amenable number.

90217489365 is a deficient number, since it is larger than the sum of its proper divisors (73777198635).

90217489365 is a wasteful number, since it uses less digits than its factorization.

90217489365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9408 (or 9399 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 90217489365 in words is "ninety billion, two hundred seventeen million, four hundred eighty-nine thousand, three hundred sixty-five".