15319761481 has 2 divisors, whose sum is σ = 15319761482. Its totient is φ = 15319761480.

The previous prime is 15319761371. The next prime is 15319761493. The reversal of 15319761481 is 18416791351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15311587600 + 8173881 = 123740^2 + 2859^2 .

It is a cyclic number.

It is not a de Polignac number, because 15319761481 - 2⁹ = 15319760969 is a prime.

It is a super-2 number, since 2×15319761481² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15319761181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7659880740 + 7659880741.

It is an arithmetic number, because the mean of its divisors is an integer number (7659880741).

Almost surely, 2^15319761481 is an apocalyptic number.

It is an amenable number.

15319761481 is a deficient number, since it is larger than the sum of its proper divisors (1).

15319761481 is an equidigital number, since it uses as much as digits as its factorization.

15319761481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 46.

The spelling of 15319761481 in words is "fifteen billion, three hundred nineteen million, seven hundred sixty-one thousand, four hundred eighty-one".