161260579879 has 32 divisors (see below), whose sum is σ = 202034880000. Its totient is φ = 125583986304.

The previous prime is 161260579867. The next prime is 161260579901. The reversal of 161260579879 is 978975062161.

It is not a de Polignac number, because 161260579879 - 2¹⁵ = 161260547111 is a prime.

It is a super-2 number, since 2×161260579879² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161260579819) 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, 434392 + ... + 714994.

It is an arithmetic number, because the mean of its divisors is an integer number (6313590000).

Almost surely, 2^161260579879 is an apocalyptic number.

161260579879 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

161260579879 is a deficient number, since it is larger than the sum of its proper divisors (40774300121).

161260579879 is a wasteful number, since it uses less digits than its factorization.

161260579879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280807.

The product of its (nonzero) digits is 11430720, while the sum is 61.

The spelling of 161260579879 in words is "one hundred sixty-one billion, two hundred sixty million, five hundred seventy-nine thousand, eight hundred seventy-nine".