2205644563642 has 16 divisors (see below), whose sum is σ = 3563017188192. Its totient is φ = 1017974686320.

The previous prime is 2205644563613. The next prime is 2205644563651. The reversal of 2205644563642 is 2463654465022.

It is a super-2 number, since 2×2205644563642² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1262713 + ... + 2450659.

It is an arithmetic number, because the mean of its divisors is an integer number (222688574262).

Almost surely, 2^{2205644563642} is an apocalyptic number.

2205644563642 is a deficient number, since it is larger than the sum of its proper divisors (1357372624550).

2205644563642 is a wasteful number, since it uses less digits than its factorization.

2205644563642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259373.

The product of its (nonzero) digits is 8294400, while the sum is 49.

The spelling of 2205644563642 in words is "two trillion, two hundred five billion, six hundred forty-four million, five hundred sixty-three thousand, six hundred forty-two".