21182775118013 has 16 divisors (see below), whose sum is σ = 21419061740352. Its totient is φ = 20947017840000.

The previous prime is 21182775118007. The next prime is 21182775118033. The reversal of 21182775118013 is 31081157728112.

It is a cyclic number.

It is not a de Polignac number, because 21182775118013 - 2²² = 21182770923709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21182775118033) 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, 586258958 + ... + 586295088.

It is an arithmetic number, because the mean of its divisors is an integer number (1338691358772).

Almost surely, 2^{21182775118013} is an apocalyptic number.

It is an amenable number.

21182775118013 is a deficient number, since it is larger than the sum of its proper divisors (236286622339).

21182775118013 is a wasteful number, since it uses less digits than its factorization.

21182775118013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43276.

The product of its (nonzero) digits is 188160, while the sum is 47.

The spelling of 21182775118013 in words is "twenty-one trillion, one hundred eighty-two billion, seven hundred seventy-five million, one hundred eighteen thousand, thirteen".