21562160368 has 20 divisors (see below), whose sum is σ = 47744783920. Its totient is φ = 9240925824.

The previous prime is 21562160311. The next prime is 21562160371. The reversal of 21562160368 is 86306126512.

It is a self number, because there is not a number n which added to its sum of digits gives 21562160368.

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, 96259533 + ... + 96259756.

It is an arithmetic number, because the mean of its divisors is an integer number (2387239196).

Almost surely, 2^21562160368 is an apocalyptic number.

21562160368 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

21562160368 is an abundant number, since it is smaller than the sum of its proper divisors (26182623552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21562160368 is a wasteful number, since it uses less digits than its factorization.

21562160368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192519304 (or 192519298 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 21562160368 in words is "twenty-one billion, five hundred sixty-two million, one hundred sixty thousand, three hundred sixty-eight".