164121565100 has 18 divisors (see below), whose sum is σ = 356143796484. Its totient is φ = 65648626000.

The previous prime is 164121565099. The next prime is 164121565141. The reversal of 164121565100 is 1565121461.

164121565100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 5 ways as a sum of consecutive naturals, for example, 820607726 + ... + 820607925.

Almost surely, 2^164121565100 is an apocalyptic number.

164121565100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164121565100 is an abundant number, since it is smaller than the sum of its proper divisors (192022231384).

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

164121565100 is a wasteful number, since it uses less digits than its factorization.

164121565100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641215665 (or 1641215658 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

Adding to 164121565100 its reverse (1565121461), we get a palindrome (165686686561).

The spelling of 164121565100 in words is "one hundred sixty-four billion, one hundred twenty-one million, five hundred sixty-five thousand, one hundred".