168815137605023 has 8 divisors (see below), whose sum is σ = 207772477052448. Its totient is φ = 133568020962144.

The previous prime is 168815137605019. The next prime is 168815137605073. The reversal of 168815137605023 is 320506731518861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 168815137605023 - 2² = 168815137605019 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 168815137605023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168815137605073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 927555701036 + ... + 927555701217.

It is an arithmetic number, because the mean of its divisors is an integer number (25971559631556).

Almost surely, 2^{168815137605023} is an apocalyptic number.

168815137605023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

168815137605023 is a deficient number, since it is larger than the sum of its proper divisors (38957339447425).

168815137605023 is a wasteful number, since it uses less digits than its factorization.

168815137605023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1855111402273.

The product of its (nonzero) digits is 7257600, while the sum is 56.

The spelling of 168815137605023 in words is "one hundred sixty-eight trillion, eight hundred fifteen billion, one hundred thirty-seven million, six hundred five thousand, twenty-three".