220481871785 has 32 divisors (see below), whose sum is σ = 319457295360. Its totient is φ = 142868339712.

The previous prime is 220481871763. The next prime is 220481871839. The reversal of 220481871785 is 587178184022.

It is not a de Polignac number, because 220481871785 - 2¹⁶ = 220481806249 is a prime.

It is a super-2 number, since 2×220481871785² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2263184 + ... + 2358593.

It is an arithmetic number, because the mean of its divisors is an integer number (9983040480).

Almost surely, 2^220481871785 is an apocalyptic number.

It is an amenable number.

220481871785 is a deficient number, since it is larger than the sum of its proper divisors (98975423575).

220481871785 is a wasteful number, since it uses less digits than its factorization.

220481871785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4621865.

The product of its (nonzero) digits is 2007040, while the sum is 53.

The spelling of 220481871785 in words is "two hundred twenty billion, four hundred eighty-one million, eight hundred seventy-one thousand, seven hundred eighty-five".