161158008193 has 32 divisors (see below), whose sum is σ = 202109402880. Its totient is φ = 125113697280.

The previous prime is 161158008169. The next prime is 161158008197. The reversal of 161158008193 is 391800851161.

It is a de Polignac number, because none of the positive numbers 2^k-161158008193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161158008197) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 985021 + ... + 1136917.

It is an arithmetic number, because the mean of its divisors is an integer number (6315918840).

Almost surely, 2^161158008193 is an apocalyptic number.

161158008193 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

161158008193 is a deficient number, since it is larger than the sum of its proper divisors (40951394687).

161158008193 is a wasteful number, since it uses less digits than its factorization.

161158008193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152137.

The product of its (nonzero) digits is 51840, while the sum is 43.

The spelling of 161158008193 in words is "one hundred sixty-one billion, one hundred fifty-eight million, eight thousand, one hundred ninety-three".