220645496454 has 32 divisors (see below), whose sum is σ = 464711040000. Its totient is φ = 69648394464.

The previous prime is 220645496447. The next prime is 220645496483. The reversal of 220645496454 is 454694546022.

It is a junction number, because it is equal to n+sod(n) for n = 220645496397 and 220645496406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129909 + ... + 676880.

It is an arithmetic number, because the mean of its divisors is an integer number (14522220000).

Almost surely, 2^220645496454 is an apocalyptic number.

220645496454 is an abundant number, since it is smaller than the sum of its proper divisors (244065543546).

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

220645496454 is a wasteful number, since it uses less digits than its factorization.

220645496454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809212.

The product of its (nonzero) digits is 8294400, while the sum is 51.

The spelling of 220645496454 in words is "two hundred twenty billion, six hundred forty-five million, four hundred ninety-six thousand, four hundred fifty-four".