26433057457 has 4 divisors (see below), whose sum is σ = 26881075440. Its totient is φ = 25985039476.

The previous prime is 26433057439. The next prime is 26433057493. The reversal of 26433057457 is 75475033462.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26433057457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26433057437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224008903 + ... + 224009020.

It is an arithmetic number, because the mean of its divisors is an integer number (6720268860).

Almost surely, 2^26433057457 is an apocalyptic number.

It is an amenable number.

26433057457 is a deficient number, since it is larger than the sum of its proper divisors (448017983).

26433057457 is an equidigital number, since it uses as much as digits as its factorization.

26433057457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448017982.

The product of its (nonzero) digits is 2116800, while the sum is 46.

The spelling of 26433057457 in words is "twenty-six billion, four hundred thirty-three million, fifty-seven thousand, four hundred fifty-seven".