168870551385 has 32 divisors (see below), whose sum is σ = 275978414592. Its totient is φ = 88136294400.

The previous prime is 168870551351. The next prime is 168870551389. The reversal of 168870551385 is 583155078861.

It is not a de Polignac number, because 168870551385 - 2⁶ = 168870551321 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (168870551389) 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, 8518485 + ... + 8538285.

It is an arithmetic number, because the mean of its divisors is an integer number (8624325456).

Almost surely, 2^168870551385 is an apocalyptic number.

168870551385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

168870551385 is a deficient number, since it is larger than the sum of its proper divisors (107107863207).

168870551385 is a wasteful number, since it uses less digits than its factorization.

168870551385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31953.

The product of its (nonzero) digits is 8064000, while the sum is 57.

The spelling of 168870551385 in words is "one hundred sixty-eight billion, eight hundred seventy million, five hundred fifty-one thousand, three hundred eighty-five".