161618183670848 has 14 divisors (see below), whose sum is σ = 320711083221966. Its totient is φ = 80809091835392.

The previous prime is 161618183670809. The next prime is 161618183670913. The reversal of 161618183670848 is 848076381816161.

It can be written as a sum of positive squares in only one way, i.e., 160728844140544 + 889339530304 = 12677888^2 + 943048^2 .

It is a super-2 number, since 2×161618183670848² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1262642059865 + ... + 1262642059992.

Almost surely, 2^{161618183670848} is an apocalyptic number.

It is an amenable number.

161618183670848 is a deficient number, since it is larger than the sum of its proper divisors (159092899551118).

161618183670848 is an equidigital number, since it uses as much as digits as its factorization.

161618183670848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2525284119869 (or 2525284119859 counting only the distinct ones).

The product of its (nonzero) digits is 74317824, while the sum is 68.

The spelling of 161618183670848 in words is "one hundred sixty-one trillion, six hundred eighteen billion, one hundred eighty-three million, six hundred seventy thousand, eight hundred forty-eight".