11725652161 has 4 divisors (see below), whose sum is σ = 11761077424. Its totient is φ = 11690226900.

The previous prime is 11725652117. The next prime is 11725652179. The reversal of 11725652161 is 16125652711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16125652711 = 7 ⋅2303664673.

It is a cyclic number.

It is not a de Polignac number, because 11725652161 - 2¹¹ = 11725650113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11725652161.

It is not an unprimeable number, because it can be changed into a prime (11725652101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17712135 + ... + 17712796.

It is an arithmetic number, because the mean of its divisors is an integer number (2940269356).

Almost surely, 2^11725652161 is an apocalyptic number.

It is an amenable number.

11725652161 is a deficient number, since it is larger than the sum of its proper divisors (35425263).

11725652161 is an equidigital number, since it uses as much as digits as its factorization.

11725652161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35425262.

The product of its digits is 25200, while the sum is 37.

The spelling of 11725652161 in words is "eleven billion, seven hundred twenty-five million, six hundred fifty-two thousand, one hundred sixty-one".