16556426835 has 128 divisors (see below), whose sum is σ = 30937890816. Its totient is φ = 7493713920.

The previous prime is 16556426771. The next prime is 16556426863. The reversal of 16556426835 is 53862465561.

It is not a de Polignac number, because 16556426835 - 2⁶ = 16556426771 is a prime.

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 127 ways as a sum of consecutive naturals, for example, 26833447 + ... + 26834063.

It is an arithmetic number, because the mean of its divisors is an integer number (241702272).

Almost surely, 2^16556426835 is an apocalyptic number.

16556426835 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16556426835 is a deficient number, since it is larger than the sum of its proper divisors (14381463981).

16556426835 is a wasteful number, since it uses less digits than its factorization.

16556426835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885.

The product of its digits is 5184000, while the sum is 51.

The spelling of 16556426835 in words is "sixteen billion, five hundred fifty-six million, four hundred twenty-six thousand, eight hundred thirty-five".