161801701748 has 12 divisors (see below), whose sum is σ = 284229607200. Its totient is φ = 80593242552.

The previous prime is 161801701717. The next prime is 161801701769. The reversal of 161801701748 is 847107108161.

It is a junction number, because it is equal to n+sod(n) for n = 161801701699 and 161801701708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76900898 + ... + 76903001.

It is an arithmetic number, because the mean of its divisors is an integer number (23685800600).

Almost surely, 2^161801701748 is an apocalyptic number.

It is an amenable number.

161801701748 is a deficient number, since it is larger than the sum of its proper divisors (122427905452).

161801701748 is a wasteful number, since it uses less digits than its factorization.

161801701748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153804166 (or 153804164 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 44.

The spelling of 161801701748 in words is "one hundred sixty-one billion, eight hundred one million, seven hundred one thousand, seven hundred forty-eight".