220666040064 has 54 divisors (see below), whose sum is σ = 636234600456. Its totient is φ = 73555345920.

The previous prime is 220666040041. The next prime is 220666040131. The reversal of 220666040064 is 460040666022.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47885292 + ... + 47889899.

Almost surely, 2^220666040064 is an apocalyptic number.

220666040064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

220666040064 is an abundant number, since it is smaller than the sum of its proper divisors (415568560392).

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

220666040064 is an equidigital number, since it uses as much as digits as its factorization.

220666040064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95775213 (or 95775196 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The spelling of 220666040064 in words is "two hundred twenty billion, six hundred sixty-six million, forty thousand, sixty-four".