15233220131491 has 2 divisors, whose sum is σ = 15233220131492. Its totient is φ = 15233220131490.

The previous prime is 15233220131447. The next prime is 15233220131557. The reversal of 15233220131491 is 19413102233251.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15233220131491 - 2¹⁷ = 15233220000419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15233220131491.

It is not a weakly prime, because it can be changed into another prime (15233220131401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7616610065745 + 7616610065746.

It is an arithmetic number, because the mean of its divisors is an integer number (7616610065746).

Almost surely, 2^{15233220131491} is an apocalyptic number.

15233220131491 is a deficient number, since it is larger than the sum of its proper divisors (1).

15233220131491 is an equidigital number, since it uses as much as digits as its factorization.

15233220131491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 15233220131491 in words is "fifteen trillion, two hundred thirty-three billion, two hundred twenty million, one hundred thirty-one thousand, four hundred ninety-one".