22056601643 has 2 divisors, whose sum is σ = 22056601644. Its totient is φ = 22056601642.

The previous prime is 22056601639. The next prime is 22056601661. The reversal of 22056601643 is 34610665022.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22056601643 - 2² = 22056601639 is a prime.

It is not a weakly prime, because it can be changed into another prime (22056601943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11028300821 + 11028300822.

It is an arithmetic number, because the mean of its divisors is an integer number (11028300822).

Almost surely, 2^22056601643 is an apocalyptic number.

22056601643 is a deficient number, since it is larger than the sum of its proper divisors (1).

22056601643 is an equidigital number, since it uses as much as digits as its factorization.

22056601643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 22056601643 in words is "twenty-two billion, fifty-six million, six hundred one thousand, six hundred forty-three".