26739249057 has 24 divisors (see below), whose sum is σ = 38786911488. Its totient is φ = 17750772000.

The previous prime is 26739249029. The next prime is 26739249067. The reversal of 26739249057 is 75094293762.

26739249057 is a `hidden beast` number, since 2 + 67 + 3 + 92 + 490 + 5 + 7 = 666.

It is not a de Polignac number, because 26739249057 - 2¹¹ = 26739247009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26739248994 and 26739249012.

It is not an unprimeable number, because it can be changed into a prime (26739249007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4966507 + ... + 4971887.

It is an arithmetic number, because the mean of its divisors is an integer number (1616121312).

Almost surely, 2^26739249057 is an apocalyptic number.

It is an amenable number.

26739249057 is a deficient number, since it is larger than the sum of its proper divisors (12047662431).

26739249057 is a wasteful number, since it uses less digits than its factorization.

26739249057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7621 (or 7618 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 54.

The spelling of 26739249057 in words is "twenty-six billion, seven hundred thirty-nine million, two hundred forty-nine thousand, fifty-seven".