26297431647248 has 20 divisors (see below), whose sum is σ = 50969233465260. Its totient is φ = 13144081075584.

The previous prime is 26297431647239. The next prime is 26297431647341. The reversal of 26297431647248 is 84274613479262.

It can be written as a sum of positive squares in 2 ways, for example, as 11885173510144 + 14412258137104 = 3447488^2 + 3796348^2 .

It is a super-2 number, since 2×26297431647248² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289624943 + ... + 289715726.

It is an arithmetic number, because the mean of its divisors is an integer number (2548461673263).

Almost surely, 2^{26297431647248} is an apocalyptic number.

It is an amenable number.

26297431647248 is a deficient number, since it is larger than the sum of its proper divisors (24671801818012).

26297431647248 is a wasteful number, since it uses less digits than its factorization.

26297431647248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579343514 (or 579343508 counting only the distinct ones).

The product of its digits is 195084288, while the sum is 65.

The spelling of 26297431647248 in words is "twenty-six trillion, two hundred ninety-seven billion, four hundred thirty-one million, six hundred forty-seven thousand, two hundred forty-eight".