161115741788 has 48 divisors (see below), whose sum is σ = 296828421120. Its totient is φ = 76447857024.

The previous prime is 161115741733. The next prime is 161115741793. The reversal of 161115741788 is 887147511161.

It is a congruent number.

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, 745493 + ... + 937011.

It is an arithmetic number, because the mean of its divisors is an integer number (6183925440).

Almost surely, 2^161115741788 is an apocalyptic number.

It is an amenable number.

161115741788 is a deficient number, since it is larger than the sum of its proper divisors (135712679332).

161115741788 is a wasteful number, since it uses less digits than its factorization.

161115741788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191706 (or 191704 counting only the distinct ones).

The product of its digits is 376320, while the sum is 50.

The spelling of 161115741788 in words is "one hundred sixty-one billion, one hundred fifteen million, seven hundred forty-one thousand, seven hundred eighty-eight".