11719953613 has 2 divisors, whose sum is σ = 11719953614. Its totient is φ = 11719953612.

The previous prime is 11719953563. The next prime is 11719953647. The reversal of 11719953613 is 31635991711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9666232489 + 2053721124 = 98317^2 + 45318^2 .

It is a cyclic number.

It is not a de Polignac number, because 11719953613 - 2²⁵ = 11686399181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11719953013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5859976806 + 5859976807.

It is an arithmetic number, because the mean of its divisors is an integer number (5859976807).

Almost surely, 2^11719953613 is an apocalyptic number.

It is an amenable number.

11719953613 is a deficient number, since it is larger than the sum of its proper divisors (1).

11719953613 is an equidigital number, since it uses as much as digits as its factorization.

11719953613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 153090, while the sum is 46.

The spelling of 11719953613 in words is "eleven billion, seven hundred nineteen million, nine hundred fifty-three thousand, six hundred thirteen".