6731990805013 has 16 divisors (see below), whose sum is σ = 7134382656000. Its totient is φ = 6334420201200.

The previous prime is 6731990804941. The next prime is 6731990805037. The reversal of 6731990805013 is 3105080991376.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 6731990805013 - 2²⁵ = 6731957250581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6731990805713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17955138 + ... + 18326236.

It is an arithmetic number, because the mean of its divisors is an integer number (445898916000).

Almost surely, 2^{6731990805013} is an apocalyptic number.

It is an amenable number.

6731990805013 is a deficient number, since it is larger than the sum of its proper divisors (402391850987).

6731990805013 is a wasteful number, since it uses less digits than its factorization.

6731990805013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377592.

The product of its (nonzero) digits is 1224720, while the sum is 52.

The spelling of 6731990805013 in words is "six trillion, seven hundred thirty-one billion, nine hundred ninety million, eight hundred five thousand, thirteen".