161113538051 has 8 divisors (see below), whose sum is σ = 168401993760. Its totient is φ = 153848708992.

The previous prime is 161113538041. The next prime is 161113538153. The reversal of 161113538051 is 150835311161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161113538051 - 2⁶ = 161113537987 is a prime.

It is a super-2 number, since 2×161113538051² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161113538011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5892716 + ... + 5919993.

It is an arithmetic number, because the mean of its divisors is an integer number (21050249220).

Almost surely, 2^161113538051 is an apocalyptic number.

161113538051 is a deficient number, since it is larger than the sum of its proper divisors (7288455709).

161113538051 is a wasteful number, since it uses less digits than its factorization.

161113538051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11813325.

The product of its (nonzero) digits is 10800, while the sum is 35.

The spelling of 161113538051 in words is "one hundred sixty-one billion, one hundred thirteen million, five hundred thirty-eight thousand, fifty-one".