161151521107166 has 48 divisors (see below), whose sum is σ = 259238697145200. Its totient is φ = 75113638195200.

The previous prime is 161151521107151. The next prime is 161151521107189. The reversal of 161151521107166 is 661701125151161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27750641 + ... + 33051491.

It is an arithmetic number, because the mean of its divisors is an integer number (5400806190525).

Almost surely, 2^{161151521107166} is an apocalyptic number.

161151521107166 is a deficient number, since it is larger than the sum of its proper divisors (98087176038034).

161151521107166 is a wasteful number, since it uses less digits than its factorization.

161151521107166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5301389 (or 5301372 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 44.

The spelling of 161151521107166 in words is "one hundred sixty-one trillion, one hundred fifty-one billion, five hundred twenty-one million, one hundred seven thousand, one hundred sixty-six".