220860864001 has 4 divisors (see below), whose sum is σ = 220876075732. Its totient is φ = 220845652272.

The previous prime is 220860863987. The next prime is 220860864089. The reversal of 220860864001 is 100468068022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39372083776 + 181488780225 = 198424^2 + 426015^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220860864001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220860868001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7584066 + ... + 7613131.

It is an arithmetic number, because the mean of its divisors is an integer number (55219018933).

Almost surely, 2^220860864001 is an apocalyptic number.

It is an amenable number.

220860864001 is a deficient number, since it is larger than the sum of its proper divisors (15211731).

220860864001 is a wasteful number, since it uses less digits than its factorization.

220860864001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15211730.

The product of its (nonzero) digits is 36864, while the sum is 37.

The spelling of 220860864001 in words is "two hundred twenty billion, eight hundred sixty million, eight hundred sixty-four thousand, one".