6665994229488 has 320 divisors, whose sum is σ = 20413813432320. Its totient is φ = 1852623360000.

The previous prime is 6665994229471. The next prime is 6665994229519. The reversal of 6665994229488 is 8849224995666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 48677113 + ... + 48813863.

It is an arithmetic number, because the mean of its divisors is an integer number (63793166976).

Almost surely, 2^{6665994229488} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6665994229488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10206906716160).

6665994229488 is an abundant number, since it is smaller than the sum of its proper divisors (13747819202832).

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

6665994229488 is a wasteful number, since it uses less digits than its factorization.

6665994229488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136948 (or 136942 counting only the distinct ones).

The product of its digits is 3224862720, while the sum is 78.

The spelling of 6665994229488 in words is "six trillion, six hundred sixty-five billion, nine hundred ninety-four million, two hundred twenty-nine thousand, four hundred eighty-eight".