21169371736151 has 2 divisors, whose sum is σ = 21169371736152. Its totient is φ = 21169371736150.

The previous prime is 21169371736129. The next prime is 21169371736171. The reversal of 21169371736151 is 15163717396112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21169371736151 - 2²⁶ = 21169304627287 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21169371736093 and 21169371736102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21169371736111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10584685868075 + 10584685868076.

It is an arithmetic number, because the mean of its divisors is an integer number (10584685868076).

Almost surely, 2^{21169371736151} is an apocalyptic number.

21169371736151 is a deficient number, since it is larger than the sum of its proper divisors (1).

21169371736151 is an equidigital number, since it uses as much as digits as its factorization.

21169371736151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1428840, while the sum is 53.

The spelling of 21169371736151 in words is "twenty-one trillion, one hundred sixty-nine billion, three hundred seventy-one million, seven hundred thirty-six thousand, one hundred fifty-one".