168301515993 has 32 divisors (see below), whose sum is σ = 246857974272. Its totient is φ = 101344992000.

The previous prime is 168301515983. The next prime is 168301516027. The reversal of 168301515993 is 399515103861.

It is not a de Polignac number, because 168301515993 - 2⁵ = 168301515961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (168301515983) 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, 14476723 + ... + 14488343.

It is an arithmetic number, because the mean of its divisors is an integer number (7714311696).

Almost surely, 2^168301515993 is an apocalyptic number.

168301515993 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

168301515993 is a deficient number, since it is larger than the sum of its proper divisors (78556458279).

168301515993 is a wasteful number, since it uses less digits than its factorization.

168301515993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19585.

The product of its (nonzero) digits is 874800, while the sum is 51.

The spelling of 168301515993 in words is "one hundred sixty-eight billion, three hundred one million, five hundred fifteen thousand, nine hundred ninety-three".