164038887500 has 36 divisors (see below), whose sum is σ = 358812128304. Its totient is φ = 65615550000.

The previous prime is 164038887499. The next prime is 164038887511. The reversal of 164038887500 is 5788830461.

It is a super-2 number, since 2×164038887500² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6549056 + ... + 6574055.

It is an arithmetic number, because the mean of its divisors is an integer number (9967003564).

Almost surely, 2^164038887500 is an apocalyptic number.

164038887500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164038887500 is an abundant number, since it is smaller than the sum of its proper divisors (194773240804).

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

164038887500 is an equidigital number, since it uses as much as digits as its factorization.

164038887500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13123140 (or 13123118 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 164038887500 in words is "one hundred sixty-four billion, thirty-eight million, eight hundred eighty-seven thousand, five hundred".