15260787691 has 2 divisors, whose sum is σ = 15260787692. Its totient is φ = 15260787690.

The previous prime is 15260787673. The next prime is 15260787697. The reversal of 15260787691 is 19678706251.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15260787691 - 2¹⁵ = 15260754923 is a prime.

It is a super-2 number, since 2×15260787691² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15260787697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7630393845 + 7630393846.

It is an arithmetic number, because the mean of its divisors is an integer number (7630393846).

Almost surely, 2^15260787691 is an apocalyptic number.

15260787691 is a deficient number, since it is larger than the sum of its proper divisors (1).

15260787691 is an equidigital number, since it uses as much as digits as its factorization.

15260787691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1270080, while the sum is 52.

The spelling of 15260787691 in words is "fifteen billion, two hundred sixty million, seven hundred eighty-seven thousand, six hundred ninety-one".