22720650287 has 2 divisors, whose sum is σ = 22720650288. Its totient is φ = 22720650286.

The previous prime is 22720650283. The next prime is 22720650301. The reversal of 22720650287 is 78205602722.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22720650287 - 2² = 22720650283 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22720650283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11360325143 + 11360325144.

It is an arithmetic number, because the mean of its divisors is an integer number (11360325144).

Almost surely, 2^22720650287 is an apocalyptic number.

22720650287 is a deficient number, since it is larger than the sum of its proper divisors (1).

22720650287 is an equidigital number, since it uses as much as digits as its factorization.

22720650287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 188160, while the sum is 41.

The spelling of 22720650287 in words is "twenty-two billion, seven hundred twenty million, six hundred fifty thousand, two hundred eighty-seven".