220645496403 has 24 divisors (see below), whose sum is σ = 320905237536. Its totient is φ = 146084400000.

The previous prime is 220645496377. The next prime is 220645496413. The reversal of 220645496403 is 304694546022.

220645496403 is a `hidden beast` number, since 2 + 2 + 0 + 64 + 549 + 6 + 40 + 3 = 666.

It is not a de Polignac number, because 220645496403 - 2⁵ = 220645496371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220645496413) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5711653 + ... + 5750153.

It is an arithmetic number, because the mean of its divisors is an integer number (13371051564).

Almost surely, 2^220645496403 is an apocalyptic number.

220645496403 is a deficient number, since it is larger than the sum of its proper divisors (100259741133).

220645496403 is a wasteful number, since it uses less digits than its factorization.

220645496403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42875 (or 42872 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 45.

The spelling of 220645496403 in words is "two hundred twenty billion, six hundred forty-five million, four hundred ninety-six thousand, four hundred three".