168900178769 has 16 divisors (see below), whose sum is σ = 194292160128. Its totient is φ = 143824367232.

The previous prime is 168900178763. The next prime is 168900178771. The reversal of 168900178769 is 967871009861.

168900178769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 168900178769 - 2¹⁶ = 168900113233 is a prime.

It is a super-2 number, since 2×168900178769² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168900178763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9109142 + ... + 9127664.

It is an arithmetic number, because the mean of its divisors is an integer number (12143260008).

Almost surely, 2^168900178769 is an apocalyptic number.

It is an amenable number.

168900178769 is a deficient number, since it is larger than the sum of its proper divisors (25391981359).

168900178769 is a wasteful number, since it uses less digits than its factorization.

168900178769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26984.

The product of its (nonzero) digits is 9144576, while the sum is 62.

The spelling of 168900178769 in words is "one hundred sixty-eight billion, nine hundred million, one hundred seventy-eight thousand, seven hundred sixty-nine".