161441699244 has 48 divisors (see below), whose sum is σ = 439297152000. Its totient is φ = 46126198608.

The previous prime is 161441699207. The next prime is 161441699257. The reversal of 161441699244 is 442996144161.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19607364 + ... + 19615595.

It is an arithmetic number, because the mean of its divisors is an integer number (9152024000).

Almost surely, 2^161441699244 is an apocalyptic number.

161441699244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

161441699244 is an abundant number, since it is smaller than the sum of its proper divisors (277855452756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161441699244 is a wasteful number, since it uses less digits than its factorization.

161441699244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39222987 (or 39222971 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 51.

The spelling of 161441699244 in words is "one hundred sixty-one billion, four hundred forty-one million, six hundred ninety-nine thousand, two hundred forty-four".