6899988692400 has 480 divisors, whose sum is σ = 24095791104000. Its totient is φ = 1681376486400.

The previous prime is 6899988692393. The next prime is 6899988692407. The reversal of 6899988692400 is 42968899986.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6899988692393) and next prime (6899988692407).

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 95 ways as a sum of consecutive naturals, for example, 216971701 + ... + 217003499.

It is an arithmetic number, because the mean of its divisors is an integer number (50199564800).

Almost surely, 2^{6899988692400} is an apocalyptic number.

6899988692400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6899988692400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12047895552000).

6899988692400 is an abundant number, since it is smaller than the sum of its proper divisors (17195802411600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6899988692400 is a wasteful number, since it uses less digits than its factorization.

6899988692400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32177 (or 32166 counting only the distinct ones).

The product of its (nonzero) digits is 967458816, while the sum is 78.

The spelling of 6899988692400 in words is "six trillion, eight hundred ninety-nine billion, nine hundred eighty-eight million, six hundred ninety-two thousand, four hundred".