165040023078 has 96 divisors (see below), whose sum is σ = 409947512832. Its totient is φ = 47007216000.

The previous prime is 165040023023. The next prime is 165040023119. The reversal of 165040023078 is 870320040561.

165040023078 is a `hidden beast` number, since 16 + 5 + 0 + 400 + 230 + 7 + 8 = 666.

165040023078 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 82808850 + ... + 82810842.

It is an arithmetic number, because the mean of its divisors is an integer number (4270286592).

Almost surely, 2^165040023078 is an apocalyptic number.

165040023078 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

165040023078 is an abundant number, since it is smaller than the sum of its proper divisors (244907489754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165040023078 is a wasteful number, since it uses less digits than its factorization.

165040023078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3730 (or 3727 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 165040023078 in words is "one hundred sixty-five billion, forty million, twenty-three thousand, seventy-eight".