6899988692401 has 4 divisors (see below), whose sum is σ = 7885701362752. Its totient is φ = 5914276022052.

The previous prime is 6899988692393. The next prime is 6899988692407. The reversal of 6899988692401 is 1042968899986.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6899988692401 - 2³ = 6899988692393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6899988692407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 492856335165 + ... + 492856335178.

It is an arithmetic number, because the mean of its divisors is an integer number (1971425340688).

Almost surely, 2^{6899988692401} is an apocalyptic number.

It is an amenable number.

6899988692401 is a deficient number, since it is larger than the sum of its proper divisors (985712670351).

6899988692401 is an equidigital number, since it uses as much as digits as its factorization.

6899988692401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985712670350.

The product of its (nonzero) digits is 967458816, while the sum is 79.

The spelling of 6899988692401 in words is "six trillion, eight hundred ninety-nine billion, nine hundred eighty-eight million, six hundred ninety-two thousand, four hundred one".