161468281628 has 24 divisors (see below), whose sum is σ = 297462547200. Its totient is φ = 76479581808.

The previous prime is 161468281619. The next prime is 161468281643. The reversal of 161468281628 is 826182864161.

It is a self number, because there is not a number n which added to its sum of digits gives 161468281628.

It is a congruent number.

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, 1138301 + ... + 1272267.

It is an arithmetic number, because the mean of its divisors is an integer number (12394272800).

Almost surely, 2^161468281628 is an apocalyptic number.

It is an amenable number.

161468281628 is a deficient number, since it is larger than the sum of its proper divisors (135994265572).

161468281628 is a wasteful number, since it uses less digits than its factorization.

161468281628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149849 (or 149847 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 53.

The spelling of 161468281628 in words is "one hundred sixty-one billion, four hundred sixty-eight million, two hundred eighty-one thousand, six hundred twenty-eight".