66054826830 has 64 divisors (see below), whose sum is σ = 163089676800. Its totient is φ = 17109765504.

The previous prime is 66054826801. The next prime is 66054826843. The reversal of 66054826830 is 3862845066.

It is a self number, because there is not a number n which added to its sum of digits gives 66054826830.

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 31 ways as a sum of consecutive naturals, for example, 615217 + ... + 714563.

It is an arithmetic number, because the mean of its divisors is an integer number (2548276200).

Almost surely, 2^66054826830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66054826830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81544838400).

66054826830 is an abundant number, since it is smaller than the sum of its proper divisors (97034849970).

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

66054826830 is a wasteful number, since it uses less digits than its factorization.

66054826830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99993.

The product of its (nonzero) digits is 1658880, while the sum is 48.

It can be divided in two parts, 660548 and 26830, that added together give a triangular number (687378 = T₁₁₇₂).

The spelling of 66054826830 in words is "sixty-six billion, fifty-four million, eight hundred twenty-six thousand, eight hundred thirty".