16307700785 has 4 divisors (see below), whose sum is σ = 19569240948. Its totient is φ = 13046160624.

The previous prime is 16307700757. The next prime is 16307700797. The reversal of 16307700785 is 58700770361.

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 10312605601 + 5995095184 = 101551^2 + 77428^2 .

It is a cyclic number.

It is not a de Polignac number, because 16307700785 - 2¹² = 16307696689 is a prime.

It is a super-2 number, since 2×16307700785² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1630770074 + ... + 1630770083.

It is an arithmetic number, because the mean of its divisors is an integer number (4892310237).

Almost surely, 2^16307700785 is an apocalyptic number.

It is an amenable number.

16307700785 is a deficient number, since it is larger than the sum of its proper divisors (3261540163).

16307700785 is an equidigital number, since it uses as much as digits as its factorization.

16307700785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3261540162.

The product of its (nonzero) digits is 246960, while the sum is 44.

The spelling of 16307700785 in words is "sixteen billion, three hundred seven million, seven hundred thousand, seven hundred eighty-five".