11625623161 has 2 divisors, whose sum is σ = 11625623162. Its totient is φ = 11625623160.

The previous prime is 11625623159. The next prime is 11625623189. The reversal of 11625623161 is 16132652611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7180867600 + 4444755561 = 84740^2 + 66669^2 .

It is a cyclic number.

It is not a de Polignac number, because 11625623161 - 2¹ = 11625623159 is a prime.

It is a super-2 number, since 2×11625623161² (a number of 21 digits) contains 22 as substring.

Together with 11625623159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11625623761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5812811580 + 5812811581.

It is an arithmetic number, because the mean of its divisors is an integer number (5812811581).

Almost surely, 2^11625623161 is an apocalyptic number.

It is an amenable number.

11625623161 is a deficient number, since it is larger than the sum of its proper divisors (1).

11625623161 is an equidigital number, since it uses as much as digits as its factorization.

11625623161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 34.

The spelling of 11625623161 in words is "eleven billion, six hundred twenty-five million, six hundred twenty-three thousand, one hundred sixty-one".