21376116743131 has 2 divisors, whose sum is σ = 21376116743132. Its totient is φ = 21376116743130.

The previous prime is 21376116743123. The next prime is 21376116743143. The reversal of 21376116743131 is 13134761167312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21376116743131 - 2³ = 21376116743123 is a prime.

It is a super-2 number, since 2×21376116743131² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21376116743231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10688058371565 + 10688058371566.

It is an arithmetic number, because the mean of its divisors is an integer number (10688058371566).

Almost surely, 2^{21376116743131} is an apocalyptic number.

21376116743131 is a deficient number, since it is larger than the sum of its proper divisors (1).

21376116743131 is an equidigital number, since it uses as much as digits as its factorization.

21376116743131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 46.

The spelling of 21376116743131 in words is "twenty-one trillion, three hundred seventy-six billion, one hundred sixteen million, seven hundred forty-three thousand, one hundred thirty-one".