16752766621 has 12 divisors (see below), whose sum is σ = 18017721280. Its totient is φ = 15533321400.

The previous prime is 16752766619. The next prime is 16752766627. The reversal of 16752766621 is 12666725761.

It is not a de Polignac number, because 16752766621 - 2¹ = 16752766619 is a prime.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16752766627) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157605 + ... + 241546.

Almost surely, 2^16752766621 is an apocalyptic number.

It is an amenable number.

16752766621 is a deficient number, since it is larger than the sum of its proper divisors (1264954659).

16752766621 is an equidigital number, since it uses as much as digits as its factorization.

16752766621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399264 (or 399217 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 49.

The spelling of 16752766621 in words is "sixteen billion, seven hundred fifty-two million, seven hundred sixty-six thousand, six hundred twenty-one".