8161663418756 has 24 divisors (see below), whose sum is σ = 14525885334240. Its totient is φ = 4011418953152.

The previous prime is 8161663418717. The next prime is 8161663418767. The reversal of 8161663418756 is 6578143661618.

It is a super-2 number, since 2×8161663418756² (a number of 27 digits) contains 22 as substring.

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, 2824136 + ... + 4929408.

It is an arithmetic number, because the mean of its divisors is an integer number (605245222260).

Almost surely, 2^{8161663418756} is an apocalyptic number.

It is an amenable number.

8161663418756 is a deficient number, since it is larger than the sum of its proper divisors (6364221915484).

8161663418756 is a wasteful number, since it uses less digits than its factorization.

8161663418756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121763 (or 2121761 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 62.

The spelling of 8161663418756 in words is "eight trillion, one hundred sixty-one billion, six hundred sixty-three million, four hundred eighteen thousand, seven hundred fifty-six".