66862504426080 has 1536 divisors, whose sum is σ = 252039145881600. Its totient is φ = 14724307353600.

The previous prime is 66862504426051. The next prime is 66862504426111. The reversal of 66862504426080 is 8062440526866.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a self number, because there is not a number n which added to its sum of digits gives 66862504426080.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 112752958264 + ... + 112752958856.

It is an arithmetic number, because the mean of its divisors is an integer number (164087985600).

Almost surely, 2^{66862504426080} is an apocalyptic number.

66862504426080 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 66862504426080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126019572940800).

66862504426080 is an abundant number, since it is smaller than the sum of its proper divisors (185176641455520).

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

66862504426080 is a wasteful number, since it uses less digits than its factorization.

66862504426080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108 (or 1100 counting only the distinct ones).

The product of its (nonzero) digits is 26542080, while the sum is 57.

The spelling of 66862504426080 in words is "sixty-six trillion, eight hundred sixty-two billion, five hundred four million, four hundred twenty-six thousand, eighty".