164620400500 has 48 divisors (see below), whose sum is σ = 371128762368. Its totient is φ = 63724020000.

The previous prime is 164620400489. The next prime is 164620400513. The reversal of 164620400500 is 5004026461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5294836 + ... + 5325835.

It is an arithmetic number, because the mean of its divisors is an integer number (7731849216).

Almost surely, 2^164620400500 is an apocalyptic number.

164620400500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164620400500 is an abundant number, since it is smaller than the sum of its proper divisors (206508361868).

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

164620400500 is a wasteful number, since it uses less digits than its factorization.

164620400500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10620721 (or 10620709 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 164620400500 its reverse (5004026461), we get a palindrome (169624426961).

The spelling of 164620400500 in words is "one hundred sixty-four billion, six hundred twenty million, four hundred thousand, five hundred".