6799001001021 has 24 divisors (see below), whose sum is σ = 9901719604920. Its totient is φ = 4495372148736.

The previous prime is 6799001000989. The next prime is 6799001001041. The reversal of 6799001001021 is 1201001009976.

It can be written as a sum of positive squares in 4 ways, for example, as 59213868921 + 6739787132100 = 243339^2 + 2596110^2 .

It is not a de Polignac number, because 6799001001021 - 2⁵ = 6799001000989 is a prime.

It is a super-2 number, since 2×6799001001021² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6799001001041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1261060 + ... + 3897213.

It is an arithmetic number, because the mean of its divisors is an integer number (412571650205).

Almost surely, 2^{6799001001021} is an apocalyptic number.

It is an amenable number.

6799001001021 is a deficient number, since it is larger than the sum of its proper divisors (3102718603899).

6799001001021 is a wasteful number, since it uses less digits than its factorization.

6799001001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5159485 (or 5159482 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 36.

The spelling of 6799001001021 in words is "six trillion, seven hundred ninety-nine billion, one million, one thousand, twenty-one".