21868702405367 has 4 divisors (see below), whose sum is σ = 21883691236440. Its totient is φ = 21853713574296.

The previous prime is 21868702405351. The next prime is 21868702405391. The reversal of 21868702405367 is 76350420786812.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21868702405367 - 2⁴ = 21868702405351 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 (21868702405327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7494413348 + ... + 7494416265.

It is an arithmetic number, because the mean of its divisors is an integer number (5470922809110).

Almost surely, 2^{21868702405367} is an apocalyptic number.

21868702405367 is a deficient number, since it is larger than the sum of its proper divisors (14988831073).

21868702405367 is a wasteful number, since it uses less digits than its factorization.

21868702405367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14988831072.

The product of its (nonzero) digits is 27095040, while the sum is 59.

The spelling of 21868702405367 in words is "twenty-one trillion, eight hundred sixty-eight billion, seven hundred two million, four hundred five thousand, three hundred sixty-seven".