101606665161 has 32 divisors (see below), whose sum is σ = 149601254400. Its totient is φ = 61087037760.

The previous prime is 101606665157. The next prime is 101606665163. The reversal of 101606665161 is 161566606101.

It is not a de Polignac number, because 101606665161 - 2² = 101606665157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101606665163) 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, 315511 + ... + 550236.

It is an arithmetic number, because the mean of its divisors is an integer number (4675039200).

Almost surely, 2^101606665161 is an apocalyptic number.

It is an amenable number.

101606665161 is a deficient number, since it is larger than the sum of its proper divisors (47994589239).

101606665161 is a wasteful number, since it uses less digits than its factorization.

101606665161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865869.

The product of its (nonzero) digits is 38880, while the sum is 39.

The spelling of 101606665161 in words is "one hundred one billion, six hundred six million, six hundred sixty-five thousand, one hundred sixty-one".