161080779 has 8 divisors (see below), whose sum is σ = 215288640. Its totient is φ = 107130056.

The previous prime is 161080757. The next prime is 161080781. The reversal of 161080779 is 977080161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161080779 - 2⁵ = 161080747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161080739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62817 + ... + 65330.

It is an arithmetic number, because the mean of its divisors is an integer number (26911080).

Almost surely, 2^161080779 is an apocalyptic number.

161080779 is a deficient number, since it is larger than the sum of its proper divisors (54207861).

161080779 is a wasteful number, since it uses less digits than its factorization.

161080779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128569.

The product of its (nonzero) digits is 21168, while the sum is 39.

The square root of 161080779 is about 12691.7602798036. The cubic root of 161080779 is about 544.1031502695.

The spelling of 161080779 in words is "one hundred sixty-one million, eighty thousand, seven hundred seventy-nine".