11725576691 has 2 divisors, whose sum is σ = 11725576692. Its totient is φ = 11725576690.

The previous prime is 11725576661. The next prime is 11725576769. The reversal of 11725576691 is 19667552711.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11725576691 is a prime.

It is not a weakly prime, because it can be changed into another prime (11725576631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5862788345 + 5862788346.

It is an arithmetic number, because the mean of its divisors is an integer number (5862788346).

Almost surely, 2^11725576691 is an apocalyptic number.

11725576691 is a deficient number, since it is larger than the sum of its proper divisors (1).

11725576691 is an equidigital number, since it uses as much as digits as its factorization.

11725576691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 793800, while the sum is 50.

The spelling of 11725576691 in words is "eleven billion, seven hundred twenty-five million, five hundred seventy-six thousand, six hundred ninety-one".