15740132809 has 2 divisors, whose sum is σ = 15740132810. Its totient is φ = 15740132808.

The previous prime is 15740132803. The next prime is 15740132813. The reversal of 15740132809 is 90823104751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13672157184 + 2067975625 = 116928^2 + 45475^2 .

It is a cyclic number.

It is not a de Polignac number, because 15740132809 - 2²⁹ = 15203261897 is a prime.

It is not a weakly prime, because it can be changed into another prime (15740132803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7870066404 + 7870066405.

It is an arithmetic number, because the mean of its divisors is an integer number (7870066405).

Almost surely, 2^15740132809 is an apocalyptic number.

It is an amenable number.

15740132809 is a deficient number, since it is larger than the sum of its proper divisors (1).

15740132809 is an equidigital number, since it uses as much as digits as its factorization.

15740132809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 15740132809 in words is "fifteen billion, seven hundred forty million, one hundred thirty-two thousand, eight hundred nine".