21650362155131 has 2 divisors, whose sum is σ = 21650362155132. Its totient is φ = 21650362155130.

The previous prime is 21650362155127. The next prime is 21650362155139. The reversal of 21650362155131 is 13155126305612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21650362155131 - 2² = 21650362155127 is a prime.

It is a super-2 number, since 2×21650362155131² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21650362155139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10825181077565 + 10825181077566.

It is an arithmetic number, because the mean of its divisors is an integer number (10825181077566).

Almost surely, 2^{21650362155131} is an apocalyptic number.

21650362155131 is a deficient number, since it is larger than the sum of its proper divisors (1).

21650362155131 is an equidigital number, since it uses as much as digits as its factorization.

21650362155131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162000, while the sum is 41.

The spelling of 21650362155131 in words is "twenty-one trillion, six hundred fifty billion, three hundred sixty-two million, one hundred fifty-five thousand, one hundred thirty-one".