161779062141 has 48 divisors (see below), whose sum is σ = 248725241856. Its totient is φ = 101116639008.

The previous prime is 161779062131. The next prime is 161779062197. The reversal of 161779062141 is 141260977161.

161779062141 is a `hidden beast` number, since 1 + 6 + 17 + 7 + 9 + 0 + 621 + 4 + 1 = 666.

It is not a de Polignac number, because 161779062141 - 2⁶ = 161779062077 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161779062131) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2144916 + ... + 2219058.

It is an arithmetic number, because the mean of its divisors is an integer number (5181775872).

Almost surely, 2^161779062141 is an apocalyptic number.

It is an amenable number.

161779062141 is a deficient number, since it is larger than the sum of its proper divisors (86946179715).

161779062141 is a wasteful number, since it uses less digits than its factorization.

161779062141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74382 (or 74379 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The spelling of 161779062141 in words is "one hundred sixty-one billion, seven hundred seventy-nine million, sixty-two thousand, one hundred forty-one".