26449019568 has 30 divisors (see below), whose sum is σ = 74020520444. Its totient is φ = 8816339808.

The previous prime is 26449019567. The next prime is 26449019573. The reversal of 26449019568 is 86591094462.

26449019568 is a `hidden beast` number, since 2 + 6 + 4 + 490 + 1 + 95 + 68 = 666.

It is a super-2 number, since 2×26449019568² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26449019567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 91836730 + ... + 91837017.

Almost surely, 2^26449019568 is an apocalyptic number.

It is an amenable number.

26449019568 is an abundant number, since it is smaller than the sum of its proper divisors (47571500876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26449019568 is a wasteful number, since it uses less digits than its factorization.

26449019568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183673761 (or 183673752 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 26449019568 in words is "twenty-six billion, four hundred forty-nine million, nineteen thousand, five hundred sixty-eight".