220624204645 has 16 divisors (see below), whose sum is σ = 286250291712. Its totient is φ = 162273384000.

The previous prime is 220624204639. The next prime is 220624204673. The reversal of 220624204645 is 546402426022.

It is not a de Polignac number, because 220624204645 - 2¹⁹ = 220623680357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6745077 + ... + 6777706.

It is an arithmetic number, because the mean of its divisors is an integer number (17890643232).

Almost surely, 2^220624204645 is an apocalyptic number.

It is an amenable number.

220624204645 is a deficient number, since it is larger than the sum of its proper divisors (65626087067).

220624204645 is a wasteful number, since it uses less digits than its factorization.

220624204645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13523052.

The product of its (nonzero) digits is 184320, while the sum is 37.

The spelling of 220624204645 in words is "two hundred twenty billion, six hundred twenty-four million, two hundred four thousand, six hundred forty-five".