90578863585863 has 12 divisors (see below), whose sum is σ = 133619883871968. Its totient is φ = 59101102481280.

The previous prime is 90578863585787. The next prime is 90578863585871. The reversal of 90578863585863 is 36858536887509.

90578863585863 is a `hidden beast` number, since 9 + 0 + 578 + 8 + 6 + 35 + 8 + 5 + 8 + 6 + 3 = 666.

90578863585863 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 90578863585863 - 2¹⁴ = 90578863569479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90578863584863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107067214218 + ... + 107067215063.

It is an arithmetic number, because the mean of its divisors is an integer number (11134990322664).

Almost surely, 2^{90578863585863} is an apocalyptic number.

90578863585863 is a deficient number, since it is larger than the sum of its proper divisors (43041020286105).

90578863585863 is a wasteful number, since it uses less digits than its factorization.

90578863585863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214134429334 (or 214134429331 counting only the distinct ones).

The product of its (nonzero) digits is 10450944000, while the sum is 81.

The spelling of 90578863585863 in words is "ninety trillion, five hundred seventy-eight billion, eight hundred sixty-three million, five hundred eighty-five thousand, eight hundred sixty-three".