22478954489 has 2 divisors, whose sum is σ = 22478954490. Its totient is φ = 22478954488.

The previous prime is 22478954471. The next prime is 22478954551. The reversal of 22478954489 is 98445987422.

It is an a-pointer prime, because the next prime (22478954551) can be obtained adding 22478954489 to its sum of digits (62).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22476006400 + 2948089 = 149920^2 + 1717^2 .

It is a cyclic number.

It is not a de Polignac number, because 22478954489 - 2⁸ = 22478954233 is a prime.

It is a super-2 number, since 2×22478954489² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22478954189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11239477244 + 11239477245.

It is an arithmetic number, because the mean of its divisors is an integer number (11239477245).

Almost surely, 2^22478954489 is an apocalyptic number.

It is an amenable number.

22478954489 is a deficient number, since it is larger than the sum of its proper divisors (1).

22478954489 is an equidigital number, since it uses as much as digits as its factorization.

22478954489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46448640, while the sum is 62.

The spelling of 22478954489 in words is "twenty-two billion, four hundred seventy-eight million, nine hundred fifty-four thousand, four hundred eighty-nine".