155116111161 has 16 divisors (see below), whose sum is σ = 226420704000. Its totient is φ = 93677568720.

The previous prime is 155116111153. The next prime is 155116111211. The reversal of 155116111161 is 161111611551.

It is a happy number.

It is not a de Polignac number, because 155116111161 - 2³ = 155116111153 is a prime.

It is a super-2 number, since 2×155116111161² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155116111061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8295411 + ... + 8314088.

It is an arithmetic number, because the mean of its divisors is an integer number (14151294000).

Almost surely, 2^155116111161 is an apocalyptic number.

155116111161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

155116111161 is a deficient number, since it is larger than the sum of its proper divisors (71304592839).

155116111161 is a wasteful number, since it uses less digits than its factorization.

155116111161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16609796.

The product of its digits is 900, while the sum is 30.

The spelling of 155116111161 in words is "one hundred fifty-five billion, one hundred sixteen million, one hundred eleven thousand, one hundred sixty-one".