691032900013 has 2 divisors, whose sum is σ = 691032900014. Its totient is φ = 691032900012.

The previous prime is 691032899941. The next prime is 691032900101. The reversal of 691032900013 is 310009230196.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 683429583204 + 7603316809 = 826698^2 + 87197^2 .

It is a cyclic number.

It is not a de Polignac number, because 691032900013 - 2²⁵ = 690999345581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (691032970013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345516450006 + 345516450007.

It is an arithmetic number, because the mean of its divisors is an integer number (345516450007).

Almost surely, 2^691032900013 is an apocalyptic number.

It is an amenable number.

691032900013 is a deficient number, since it is larger than the sum of its proper divisors (1).

691032900013 is an equidigital number, since it uses as much as digits as its factorization.

691032900013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 34.

The spelling of 691032900013 in words is "six hundred ninety-one billion, thirty-two million, nine hundred thousand, thirteen".