2228809443645 has 16 divisors (see below), whose sum is σ = 3566425593600. Its totient is φ = 1188588208704.

The previous prime is 2228809443643. The next prime is 2228809443677. The reversal of 2228809443645 is 5463449088222.

It is not a de Polignac number, because 2228809443645 - 2¹ = 2228809443643 is a prime.

It is a super-2 number, since 2×2228809443645² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2228809443643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6717694 + ... + 7041663.

It is an arithmetic number, because the mean of its divisors is an integer number (222901599600).

Almost surely, 2^{2228809443645} is an apocalyptic number.

It is an amenable number.

2228809443645 is a deficient number, since it is larger than the sum of its proper divisors (1337616149955).

2228809443645 is a wasteful number, since it uses less digits than its factorization.

2228809443645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13770164.

The product of its (nonzero) digits is 26542080, while the sum is 57.

The spelling of 2228809443645 in words is "two trillion, two hundred twenty-eight billion, eight hundred nine million, four hundred forty-three thousand, six hundred forty-five".