220861078680 has 128 divisors (see below), whose sum is σ = 722956492800. Its totient is φ = 53531827200.

The previous prime is 220861078661. The next prime is 220861078687. The reversal of 220861078680 is 86870168022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220861078687) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8658345 + ... + 8683815.

It is an arithmetic number, because the mean of its divisors is an integer number (5648097600).

Almost surely, 2^220861078680 is an apocalyptic number.

220861078680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220861078680 is an abundant number, since it is smaller than the sum of its proper divisors (502095414120).

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

220861078680 is a wasteful number, since it uses less digits than its factorization.

220861078680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32065 (or 32061 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 48.

The spelling of 220861078680 in words is "two hundred twenty billion, eight hundred sixty-one million, seventy-eight thousand, six hundred eighty".