161288017444 has 48 divisors (see below), whose sum is σ = 291894865920. Its totient is φ = 77927951360.

The previous prime is 161288017427. The next prime is 161288017453. The reversal of 161288017444 is 444710882161.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 161288017394 and 161288017403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53352117 + ... + 53355139.

It is an arithmetic number, because the mean of its divisors is an integer number (6081143040).

Almost surely, 2^161288017444 is an apocalyptic number.

It is an amenable number.

161288017444 is a deficient number, since it is larger than the sum of its proper divisors (130606848476).

161288017444 is a wasteful number, since it uses less digits than its factorization.

161288017444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6060 (or 6058 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 46.

The spelling of 161288017444 in words is "one hundred sixty-one billion, two hundred eighty-eight million, seventeen thousand, four hundred forty-four".