16291626785 has 16 divisors (see below), whose sum is σ = 22438705536. Its totient is φ = 11123449728.

The previous prime is 16291626739. The next prime is 16291626811. The reversal of 16291626785 is 58762619261.

It is a cyclic number.

It is not a de Polignac number, because 16291626785 - 2¹⁰ = 16291625761 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 990719 + ... + 1007028.

It is an arithmetic number, because the mean of its divisors is an integer number (1402419096).

Almost surely, 2^16291626785 is an apocalyptic number.

It is an amenable number.

16291626785 is a deficient number, since it is larger than the sum of its proper divisors (6147078751).

16291626785 is a wasteful number, since it uses less digits than its factorization.

16291626785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997992.

The product of its digits is 2177280, while the sum is 53.

The spelling of 16291626785 in words is "sixteen billion, two hundred ninety-one million, six hundred twenty-six thousand, seven hundred eighty-five".