161143754618 has 16 divisors (see below), whose sum is σ = 301359749184. Its totient is φ = 62783280960.

The previous prime is 161143754599. The next prime is 161143754621. The reversal of 161143754618 is 816457341161.

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, 523193855 + ... + 523194162.

It is an arithmetic number, because the mean of its divisors is an integer number (18834984324).

Almost surely, 2^161143754618 is an apocalyptic number.

161143754618 is a deficient number, since it is larger than the sum of its proper divisors (140215994566).

161143754618 is a wasteful number, since it uses less digits than its factorization.

161143754618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046388037.

The product of its digits is 483840, while the sum is 47.

The spelling of 161143754618 in words is "one hundred sixty-one billion, one hundred forty-three million, seven hundred fifty-four thousand, six hundred eighteen".