11958310161 has 24 divisors (see below), whose sum is σ = 19757264384. Its totient is φ = 6827587200.

The previous prime is 11958310159. The next prime is 11958310163. The reversal of 11958310161 is 16101385911.

11958310161 is a `hidden beast` number, since 1 + 1 + 9 + 583 + 10 + 1 + 61 = 666.

It is an interprime number because it is at equal distance from previous prime (11958310159) and next prime (11958310163).

It is not a de Polignac number, because 11958310161 - 2¹ = 11958310159 is a prime.

It is a super-3 number, since 3×11958310161³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11958310163) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3361 + ... + 154686.

Almost surely, 2^11958310161 is an apocalyptic number.

It is an amenable number.

11958310161 is a deficient number, since it is larger than the sum of its proper divisors (7798954223).

11958310161 is a wasteful number, since it uses less digits than its factorization.

11958310161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159261 (or 159258 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 36.

The spelling of 11958310161 in words is "eleven billion, nine hundred fifty-eight million, three hundred ten thousand, one hundred sixty-one".