90881593855 has 16 divisors (see below), whose sum is σ = 117708595200. Its totient is φ = 66963068928.

The previous prime is 90881593843. The next prime is 90881593883. The reversal of 90881593855 is 55839518809.

It is a cyclic number.

It is not a de Polignac number, because 90881593855 - 2¹¹ = 90881591807 is a prime.

It is a super-2 number, since 2×90881593855² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90881593793 and 90881593802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1527807 + ... + 1586176.

It is an arithmetic number, because the mean of its divisors is an integer number (7356787200).

Almost surely, 2^90881593855 is an apocalyptic number.

90881593855 is a deficient number, since it is larger than the sum of its proper divisors (26827001345).

90881593855 is a wasteful number, since it uses less digits than its factorization.

90881593855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3114450.

The product of its (nonzero) digits is 15552000, while the sum is 61.

The spelling of 90881593855 in words is "ninety billion, eight hundred eighty-one million, five hundred ninety-three thousand, eight hundred fifty-five".