21160563153 has 16 divisors (see below), whose sum is σ = 30052632960. Its totient is φ = 13197706496.

The previous prime is 21160563143. The next prime is 21160563161. The reversal of 21160563153 is 35136506112.

It is a cyclic number.

It is not a de Polignac number, because 21160563153 - 2⁵ = 21160563121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21160563133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1233738 + ... + 1250771.

It is an arithmetic number, because the mean of its divisors is an integer number (1878289560).

Almost surely, 2^21160563153 is an apocalyptic number.

It is an amenable number.

21160563153 is a deficient number, since it is larger than the sum of its proper divisors (8892069807).

21160563153 is a wasteful number, since it uses less digits than its factorization.

21160563153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2484696.

The product of its (nonzero) digits is 16200, while the sum is 33.

The spelling of 21160563153 in words is "twenty-one billion, one hundred sixty million, five hundred sixty-three thousand, one hundred fifty-three".