22478479949 has 2 divisors, whose sum is σ = 22478479950. Its totient is φ = 22478479948.

The previous prime is 22478479927. The next prime is 22478479973. The reversal of 22478479949 is 94997487422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11884924324 + 10593555625 = 109018^2 + 102925^2 .

It is a cyclic number.

It is not a de Polignac number, because 22478479949 - 2⁸ = 22478479693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22478479249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11239239974 + 11239239975.

It is an arithmetic number, because the mean of its divisors is an integer number (11239239975).

Almost surely, 2^22478479949 is an apocalyptic number.

It is an amenable number.

22478479949 is a deficient number, since it is larger than the sum of its proper divisors (1).

22478479949 is an equidigital number, since it uses as much as digits as its factorization.

22478479949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 73156608, while the sum is 65.

The spelling of 22478479949 in words is "twenty-two billion, four hundred seventy-eight million, four hundred seventy-nine thousand, nine hundred forty-nine".