168237440855 has 16 divisors (see below), whose sum is σ = 220308940800. Its totient is φ = 122315148960.

The previous prime is 168237440837. The next prime is 168237440911. The reversal of 168237440855 is 558044732861.

It is a de Polignac number, because none of the positive numbers 2^k-168237440855 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 168237440797 and 168237440806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 318815 + ... + 661904.

It is an arithmetic number, because the mean of its divisors is an integer number (13769308800).

Almost surely, 2^168237440855 is an apocalyptic number.

168237440855 is a deficient number, since it is larger than the sum of its proper divisors (52071499945).

168237440855 is a wasteful number, since it uses less digits than its factorization.

168237440855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983854.

The product of its (nonzero) digits is 6451200, while the sum is 53.

The spelling of 168237440855 in words is "one hundred sixty-eight billion, two hundred thirty-seven million, four hundred forty thousand, eight hundred fifty-five".