161016015115 has 16 divisors (see below), whose sum is σ = 193705380000. Its totient is φ = 128488972032.

The previous prime is 161016015091. The next prime is 161016015137. The reversal of 161016015115 is 511510610161.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161016015115 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5196609 + ... + 5227501.

It is an arithmetic number, because the mean of its divisors is an integer number (12106586250).

Almost surely, 2^161016015115 is an apocalyptic number.

161016015115 is a deficient number, since it is larger than the sum of its proper divisors (32689364885).

161016015115 is a wasteful number, since it uses less digits than its factorization.

161016015115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33486.

The product of its (nonzero) digits is 900, while the sum is 28.

Adding to 161016015115 its reverse (511510610161), we get a palindrome (672526625276).

The spelling of 161016015115 in words is "one hundred sixty-one billion, sixteen million, fifteen thousand, one hundred fifteen".