6999566733432 has 768 divisors, whose sum is σ = 25430062694400. Its totient is φ = 1687263851520.

The previous prime is 6999566733403. The next prime is 6999566733433. The reversal of 6999566733432 is 2343376659996.

6999566733432 is a `hidden beast` number, since 69 + 9 + 9 + 5 + 66 + 73 + 3 + 432 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6999566733433) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1339114803 + ... + 1339120029.

It is an arithmetic number, because the mean of its divisors is an integer number (33112060800).

Almost surely, 2^{6999566733432} is an apocalyptic number.

6999566733432 is a gapful number since it is divisible by the number (62) 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 6999566733432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12715031347200).

6999566733432 is an abundant number, since it is smaller than the sum of its proper divisors (18430495960968).

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

6999566733432 is a wasteful number, since it uses less digits than its factorization.

6999566733432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5656 (or 5649 counting only the distinct ones).

The product of its digits is 1190427840, while the sum is 72.

The spelling of 6999566733432 in words is "six trillion, nine hundred ninety-nine billion, five hundred sixty-six million, seven hundred thirty-three thousand, four hundred thirty-two".