164539639380 has 48 divisors (see below), whose sum is σ = 484958940480. Its totient is φ = 41567908608.

The previous prime is 164539639367. The next prime is 164539639421. The reversal of 164539639380 is 83936935461.

It is a happy number.

164539639380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a self number, because there is not a number n which added to its sum of digits gives 164539639380.

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 15 ways as a sum of consecutive naturals, for example, 72165369 + ... + 72167648.

It is an arithmetic number, because the mean of its divisors is an integer number (10103311260).

Almost surely, 2^164539639380 is an apocalyptic number.

164539639380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164539639380 is an abundant number, since it is smaller than the sum of its proper divisors (320419301100).

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

164539639380 is a wasteful number, since it uses less digits than its factorization.

164539639380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144333048 (or 144333046 counting only the distinct ones).

The product of its (nonzero) digits is 12597120, while the sum is 57.

The spelling of 164539639380 in words is "one hundred sixty-four billion, five hundred thirty-nine million, six hundred thirty-nine thousand, three hundred eighty".