161247959170 has 32 divisors (see below), whose sum is σ = 302260584960. Its totient is φ = 61866174720.

The previous prime is 161247959161. The next prime is 161247959189. The reversal of 161247959170 is 71959742161.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2266540 + ... + 2336599.

It is an arithmetic number, because the mean of its divisors is an integer number (9445643280).

Almost surely, 2^161247959170 is an apocalyptic number.

161247959170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161247959170 is a deficient number, since it is larger than the sum of its proper divisors (141012625790).

161247959170 is a wasteful number, since it uses less digits than its factorization.

161247959170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4603290.

The product of its (nonzero) digits is 952560, while the sum is 52.

The spelling of 161247959170 in words is "one hundred sixty-one billion, two hundred forty-seven million, nine hundred fifty-nine thousand, one hundred seventy".