21896838059618 has 16 divisors (see below), whose sum is σ = 33082803529440. Its totient is φ = 10869242834016.

The previous prime is 21896838059573. The next prime is 21896838059639. The reversal of 21896838059618 is 81695083869812.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5951921 + ... + 8900507.

It is an arithmetic number, because the mean of its divisors is an integer number (2067675220590).

Almost surely, 2^{21896838059618} is an apocalyptic number.

21896838059618 is a deficient number, since it is larger than the sum of its proper divisors (11185965469822).

21896838059618 is a wasteful number, since it uses less digits than its factorization.

21896838059618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2975441.

The product of its (nonzero) digits is 358318080, while the sum is 74.

The spelling of 21896838059618 in words is "twenty-one trillion, eight hundred ninety-six billion, eight hundred thirty-eight million, fifty-nine thousand, six hundred eighteen".