22188335537 has 2 divisors, whose sum is σ = 22188335538. Its totient is φ = 22188335536.

The previous prime is 22188335513. The next prime is 22188335557. The reversal of 22188335537 is 73553388122.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21733835776 + 454499761 = 147424^2 + 21319^2 .

It is a cyclic number.

It is not a de Polignac number, because 22188335537 - 2¹² = 22188331441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22188335491 and 22188335500.

It is not a weakly prime, because it can be changed into another prime (22188335557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11094167768 + 11094167769.

It is an arithmetic number, because the mean of its divisors is an integer number (11094167769).

Almost surely, 2^22188335537 is an apocalyptic number.

It is an amenable number.

22188335537 is a deficient number, since it is larger than the sum of its proper divisors (1).

22188335537 is an equidigital number, since it uses as much as digits as its factorization.

22188335537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1209600, while the sum is 47.

The spelling of 22188335537 in words is "twenty-two billion, one hundred eighty-eight million, three hundred thirty-five thousand, five hundred thirty-seven".