90488955617 has 4 divisors (see below), whose sum is σ = 90534498096. Its totient is φ = 90443413140.

The previous prime is 90488955611. The next prime is 90488955649. The reversal of 90488955617 is 71655988409.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90488955617 - 2²⁸ = 90220520161 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90488955617.

It is not an unprimeable number, because it can be changed into a prime (90488955611) 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, 22768259 + ... + 22772232.

It is an arithmetic number, because the mean of its divisors is an integer number (22633624524).

Almost surely, 2^90488955617 is an apocalyptic number.

It is an amenable number.

90488955617 is a deficient number, since it is larger than the sum of its proper divisors (45542479).

90488955617 is a wasteful number, since it uses less digits than its factorization.

90488955617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45542478.

The product of its (nonzero) digits is 21772800, while the sum is 62.

The spelling of 90488955617 in words is "ninety billion, four hundred eighty-eight million, nine hundred fifty-five thousand, six hundred seventeen".