11897709013 has 2 divisors, whose sum is σ = 11897709014. Its totient is φ = 11897709012.

The previous prime is 11897709007. The next prime is 11897709017. The reversal of 11897709013 is 31090779811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11462485969 + 435223044 = 107063^2 + 20862^2 .

It is a cyclic number.

It is not a de Polignac number, because 11897709013 - 2²⁵ = 11864154581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11897709017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5948854506 + 5948854507.

It is an arithmetic number, because the mean of its divisors is an integer number (5948854507).

Almost surely, 2^11897709013 is an apocalyptic number.

It is an amenable number.

11897709013 is a deficient number, since it is larger than the sum of its proper divisors (1).

11897709013 is an equidigital number, since it uses as much as digits as its factorization.

11897709013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 46.

The spelling of 11897709013 in words is "eleven billion, eight hundred ninety-seven million, seven hundred nine thousand, thirteen".