161155616786876 has 6 divisors (see below), whose sum is σ = 282022329377040. Its totient is φ = 80577808393436.

The previous prime is 161155616786849. The next prime is 161155616786893. The reversal of 161155616786876 is 678687616551161.

It is a super-2 number, since 2×161155616786876² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20144452098356 + ... + 20144452098363.

It is an arithmetic number, because the mean of its divisors is an integer number (47003721562840).

Almost surely, 2^{161155616786876} is an apocalyptic number.

It is an amenable number.

161155616786876 is a deficient number, since it is larger than the sum of its proper divisors (120866712590164).

161155616786876 is a wasteful number, since it uses less digits than its factorization.

161155616786876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40288904196723 (or 40288904196721 counting only the distinct ones).

The product of its digits is 609638400, while the sum is 74.

The spelling of 161155616786876 in words is "one hundred sixty-one trillion, one hundred fifty-five billion, six hundred sixteen million, seven hundred eighty-six thousand, eight hundred seventy-six".