90553559615 has 4 divisors (see below), whose sum is σ = 108664271544. Its totient is φ = 72442847688.

The previous prime is 90553559581. The next prime is 90553559627. The reversal of 90553559615 is 51695535509.

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 90553559615 - 2¹⁴ = 90553543231 is a prime.

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 3 ways as a sum of consecutive naturals, for example, 9055355957 + ... + 9055355966.

It is an arithmetic number, because the mean of its divisors is an integer number (27166067886).

Almost surely, 2^90553559615 is an apocalyptic number.

90553559615 is a deficient number, since it is larger than the sum of its proper divisors (18110711929).

90553559615 is a wasteful number, since it uses less digits than its factorization.

90553559615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18110711928.

The product of its (nonzero) digits is 4556250, while the sum is 53.

The spelling of 90553559615 in words is "ninety billion, five hundred fifty-three million, five hundred fifty-nine thousand, six hundred fifteen".