90985323415 has 48 divisors (see below), whose sum is σ = 133216693632. Its totient is φ = 59411874816.

The previous prime is 90985323391. The next prime is 90985323449. The reversal of 90985323415 is 51432358909.

It is not a de Polignac number, because 90985323415 - 2¹¹ = 90985321367 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 319279 + ... + 532831.

It is an arithmetic number, because the mean of its divisors is an integer number (2775347784).

Almost surely, 2^90985323415 is an apocalyptic number.

90985323415 is a deficient number, since it is larger than the sum of its proper divisors (42231370217).

90985323415 is a wasteful number, since it uses less digits than its factorization.

90985323415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213656 (or 213649 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 49.

The spelling of 90985323415 in words is "ninety billion, nine hundred eighty-five million, three hundred twenty-three thousand, four hundred fifteen".