22184006857 has 2 divisors, whose sum is σ = 22184006858. Its totient is φ = 22184006856.

The previous prime is 22184006839. The next prime is 22184006879. The reversal of 22184006857 is 75860048122.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18634707081 + 3549299776 = 136509^2 + 59576^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22184006857 is a prime.

It is not a weakly prime, because it can be changed into another prime (22184006557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11092003428 + 11092003429.

It is an arithmetic number, because the mean of its divisors is an integer number (11092003429).

Almost surely, 2^22184006857 is an apocalyptic number.

It is an amenable number.

22184006857 is a deficient number, since it is larger than the sum of its proper divisors (1).

22184006857 is an equidigital number, since it uses as much as digits as its factorization.

22184006857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 215040, while the sum is 43.

The spelling of 22184006857 in words is "twenty-two billion, one hundred eighty-four million, six thousand, eight hundred fifty-seven".