16428786501 has 16 divisors (see below), whose sum is σ = 22136788800. Its totient is φ = 10836715008.

The previous prime is 16428786497. The next prime is 16428786613. The reversal of 16428786501 is 10568782461.

It is not a de Polignac number, because 16428786501 - 2² = 16428786497 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16428786001) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1994770 + ... + 2002988.

It is an arithmetic number, because the mean of its divisors is an integer number (1383549300).

Almost surely, 2^16428786501 is an apocalyptic number.

It is an amenable number.

16428786501 is a deficient number, since it is larger than the sum of its proper divisors (5708002299).

16428786501 is an equidigital number, since it uses as much as digits as its factorization.

16428786501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15188.

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 16428786501 in words is "sixteen billion, four hundred twenty-eight million, seven hundred eighty-six thousand, five hundred one".