16126910785 has 4 divisors (see below), whose sum is σ = 19352292948. Its totient is φ = 12901528624.

The previous prime is 16126910783. The next prime is 16126910831. The reversal of 16126910785 is 58701962161.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4611903921 + 11515006864 = 67911^2 + 107308^2 .

It is a cyclic number.

It is not a de Polignac number, because 16126910785 - 2¹ = 16126910783 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16126910783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1612691074 + ... + 1612691083.

It is an arithmetic number, because the mean of its divisors is an integer number (4838073237).

Almost surely, 2^16126910785 is an apocalyptic number.

It is an amenable number.

16126910785 is a deficient number, since it is larger than the sum of its proper divisors (3225382163).

16126910785 is an equidigital number, since it uses as much as digits as its factorization.

16126910785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3225382162.

The product of its (nonzero) digits is 181440, while the sum is 46.

The spelling of 16126910785 in words is "sixteen billion, one hundred twenty-six million, nine hundred ten thousand, seven hundred eighty-five".