26307445057 has 4 divisors (see below), whose sum is σ = 27451247040. Its totient is φ = 25163643076.

The previous prime is 26307445013. The next prime is 26307445067. The reversal of 26307445057 is 75054470362.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75054470362 = 2 ⋅37527235181.

It is a cyclic number.

It is not a de Polignac number, because 26307445057 - 2²⁷ = 26173227329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26307445067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 571900957 + ... + 571901002.

It is an arithmetic number, because the mean of its divisors is an integer number (6862811760).

Almost surely, 2^26307445057 is an apocalyptic number.

It is an amenable number.

26307445057 is a deficient number, since it is larger than the sum of its proper divisors (1143801983).

26307445057 is a wasteful number, since it uses less digits than its factorization.

26307445057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143801982.

The product of its (nonzero) digits is 705600, while the sum is 43.

The spelling of 26307445057 in words is "twenty-six billion, three hundred seven million, four hundred forty-five thousand, fifty-seven".