6699770013888 has 448 divisors, whose sum is σ = 24128221593600. Its totient is φ = 1801614348288.

The previous prime is 6699770013883. The next prime is 6699770013929. The reversal of 6699770013888 is 8883100779966.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (6699770013883) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16455073 + ... + 16857311.

Almost surely, 2^{6699770013888} is an apocalyptic number.

6699770013888 is a gapful number since it is divisible by the number (68) 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 6699770013888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12064110796800).

6699770013888 is an abundant number, since it is smaller than the sum of its proper divisors (17428451579712).

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

6699770013888 is an equidigital number, since it uses as much as digits as its factorization.

6699770013888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402296 (or 402268 counting only the distinct ones).

The product of its (nonzero) digits is 219469824, while the sum is 72.

The spelling of 6699770013888 in words is "six trillion, six hundred ninety-nine billion, seven hundred seventy million, thirteen thousand, eight hundred eighty-eight".