161188285675578 has 48 divisors (see below), whose sum is σ = 385144872362784. Its totient is φ = 44809098717600.

The previous prime is 161188285675561. The next prime is 161188285675589. The reversal of 161188285675578 is 875576582881161.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7408900948 + ... + 7408922703.

It is an arithmetic number, because the mean of its divisors is an integer number (8023851507558).

Almost surely, 2^{161188285675578} is an apocalyptic number.

161188285675578 is an abundant number, since it is smaller than the sum of its proper divisors (223956586687206).

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

161188285675578 is a wasteful number, since it uses less digits than its factorization.

161188285675578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14817823707 (or 14817823700 counting only the distinct ones).

The product of its digits is 1806336000, while the sum is 78.

The spelling of 161188285675578 in words is "one hundred sixty-one trillion, one hundred eighty-eight billion, two hundred eighty-five million, six hundred seventy-five thousand, five hundred seventy-eight".