22146489487 has 2 divisors, whose sum is σ = 22146489488. Its totient is φ = 22146489486.

The previous prime is 22146489461. The next prime is 22146489523. The reversal of 22146489487 is 78498464122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22146489487 - 2²⁷ = 22012271759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22146489437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11073244743 + 11073244744.

It is an arithmetic number, because the mean of its divisors is an integer number (11073244744).

Almost surely, 2^22146489487 is an apocalyptic number.

22146489487 is a deficient number, since it is larger than the sum of its proper divisors (1).

22146489487 is an equidigital number, since it uses as much as digits as its factorization.

22146489487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6193152, while the sum is 55.

The spelling of 22146489487 in words is "twenty-two billion, one hundred forty-six million, four hundred eighty-nine thousand, four hundred eighty-seven".