16764173221400 has 96 divisors (see below), whose sum is σ = 42705717663600. Its totient is φ = 6069442444800.

The previous prime is 16764173221387. The next prime is 16764173221451. The reversal of 16764173221400 is 412237146761.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16133927 + ... + 17141526.

Almost surely, 2^{16764173221400} is an apocalyptic number.

16764173221400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16764173221400 is an abundant number, since it is smaller than the sum of its proper divisors (25941544442200).

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

16764173221400 is a wasteful number, since it uses less digits than its factorization.

16764173221400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33275709 (or 33275700 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 44.

The spelling of 16764173221400 in words is "sixteen trillion, seven hundred sixty-four billion, one hundred seventy-three million, two hundred twenty-one thousand, four hundred".