15820800713 has 2 divisors, whose sum is σ = 15820800714. Its totient is φ = 15820800712.

The previous prime is 15820800703. The next prime is 15820800727. The reversal of 15820800713 is 31700802851.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8528153104 + 7292647609 = 92348^2 + 85397^2 .

It is a cyclic number.

It is not a de Polignac number, because 15820800713 - 2⁶ = 15820800649 is a prime.

It is a super-2 number, since 2×15820800713² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (15820800703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7910400356 + 7910400357.

It is an arithmetic number, because the mean of its divisors is an integer number (7910400357).

Almost surely, 2^15820800713 is an apocalyptic number.

It is an amenable number.

15820800713 is a deficient number, since it is larger than the sum of its proper divisors (1).

15820800713 is an equidigital number, since it uses as much as digits as its factorization.

15820800713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 35.

The spelling of 15820800713 in words is "fifteen billion, eight hundred twenty million, eight hundred thousand, seven hundred thirteen".