161100556516151 has 32 divisors (see below), whose sum is σ = 185696071440000. Its totient is φ = 136903846920192.

The previous prime is 161100556516091. The next prime is 161100556516169. The reversal of 161100556516151 is 151615655001161.

161100556516151 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 161100556516151 - 2¹⁰ = 161100556515127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161100556516171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6817905005 + ... + 6817928633.

It is an arithmetic number, because the mean of its divisors is an integer number (5803002232500).

Almost surely, 2^{161100556516151} is an apocalyptic number.

161100556516151 is a deficient number, since it is larger than the sum of its proper divisors (24595514923849).

161100556516151 is a wasteful number, since it uses less digits than its factorization.

161100556516151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35691.

The product of its (nonzero) digits is 135000, while the sum is 44.

The spelling of 161100556516151 in words is "one hundred sixty-one trillion, one hundred billion, five hundred fifty-six million, five hundred sixteen thousand, one hundred fifty-one".