161339655530 has 16 divisors (see below), whose sum is σ = 291202698240. Its totient is φ = 64360013712.

The previous prime is 161339655497. The next prime is 161339655557. The reversal of 161339655530 is 35556933161.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21977210 + ... + 21984549.

It is an arithmetic number, because the mean of its divisors is an integer number (18200168640).

Almost surely, 2^161339655530 is an apocalyptic number.

161339655530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161339655530 is a deficient number, since it is larger than the sum of its proper divisors (129863042710).

161339655530 is a wasteful number, since it uses less digits than its factorization.

161339655530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43962133.

The product of its (nonzero) digits is 1093500, while the sum is 47.

The spelling of 161339655530 in words is "one hundred sixty-one billion, three hundred thirty-nine million, six hundred fifty-five thousand, five hundred thirty".