22415155251491 has 2 divisors, whose sum is σ = 22415155251492. Its totient is φ = 22415155251490.

The previous prime is 22415155251371. The next prime is 22415155251493. The reversal of 22415155251491 is 19415255151422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22415155251491 - 2¹⁴ = 22415155235107 is a prime.

Together with 22415155251493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22415155251493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11207577625745 + 11207577625746.

It is an arithmetic number, because the mean of its divisors is an integer number (11207577625746).

Almost surely, 2^{22415155251491} is an apocalyptic number.

22415155251491 is a deficient number, since it is larger than the sum of its proper divisors (1).

22415155251491 is an equidigital number, since it uses as much as digits as its factorization.

22415155251491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720000, while the sum is 47.

The spelling of 22415155251491 in words is "twenty-two trillion, four hundred fifteen billion, one hundred fifty-five million, two hundred fifty-one thousand, four hundred ninety-one".