17421645164 has 48 divisors (see below), whose sum is σ = 38546274816. Its totient is φ = 6692044800.

The previous prime is 17421645161. The next prime is 17421645179. The reversal of 17421645164 is 46154612471.

It is not an unprimeable number, because it can be changed into a prime (17421645161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 376469 + ... + 420204.

It is an arithmetic number, because the mean of its divisors is an integer number (803047392).

Almost surely, 2^17421645164 is an apocalyptic number.

17421645164 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

17421645164 is an abundant number, since it is smaller than the sum of its proper divisors (21124629652).

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

17421645164 is a wasteful number, since it uses less digits than its factorization.

17421645164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796766 (or 796764 counting only the distinct ones).

The product of its digits is 161280, while the sum is 41.

The spelling of 17421645164 in words is "seventeen billion, four hundred twenty-one million, six hundred forty-five thousand, one hundred sixty-four".