161306564350 has 24 divisors (see below), whose sum is σ = 307007660520. Its totient is φ = 63022098720.

The previous prime is 161306564317. The next prime is 161306564381. The reversal of 161306564350 is 53465603161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37511005 + ... + 37515304.

It is an arithmetic number, because the mean of its divisors is an integer number (12791985855).

Almost surely, 2^161306564350 is an apocalyptic number.

161306564350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161306564350 is a deficient number, since it is larger than the sum of its proper divisors (145701096170).

161306564350 is a wasteful number, since it uses less digits than its factorization.

161306564350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75026364 (or 75026359 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 40.

The spelling of 161306564350 in words is "one hundred sixty-one billion, three hundred six million, five hundred sixty-four thousand, three hundred fifty".