161579431270 has 16 divisors (see below), whose sum is σ = 290847591648. Its totient is φ = 64630746880.

The previous prime is 161579431261. The next prime is 161579431271. The reversal of 161579431270 is 72134975161.

It is a super-2 number, since 2×161579431270² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161579431270.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161579431271) 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, 1042767 + ... + 1187653.

It is an arithmetic number, because the mean of its divisors is an integer number (18177974478).

Almost surely, 2^161579431270 is an apocalyptic number.

161579431270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161579431270 is a deficient number, since it is larger than the sum of its proper divisors (129268160378).

161579431270 is a wasteful number, since it uses less digits than its factorization.

161579431270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256415.

The product of its (nonzero) digits is 317520, while the sum is 46.

The spelling of 161579431270 in words is "one hundred sixty-one billion, five hundred seventy-nine million, four hundred thirty-one thousand, two hundred seventy".