168436868955 has 32 divisors (see below), whose sum is σ = 295191604800. Its totient is φ = 81633226752.

The previous prime is 168436868953. The next prime is 168436868969. The reversal of 168436868955 is 559868634861.

It is not a de Polignac number, because 168436868955 - 2¹ = 168436868953 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 168436868955.

It is not an unprimeable number, because it can be changed into a prime (168436868953) 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, 11381170 + ... + 11395959.

It is an arithmetic number, because the mean of its divisors is an integer number (9224737650).

Almost surely, 2^168436868955 is an apocalyptic number.

168436868955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

168436868955 is a deficient number, since it is larger than the sum of its proper divisors (126754735845).

168436868955 is a wasteful number, since it uses less digits than its factorization.

168436868955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22777183.

The product of its digits is 298598400, while the sum is 69.

The spelling of 168436868955 in words is "one hundred sixty-eight billion, four hundred thirty-six million, eight hundred sixty-eight thousand, nine hundred fifty-five".