26457312042 has 80 divisors (see below), whose sum is σ = 68248065600. Its totient is φ = 7504011072.

The previous prime is 26457312001. The next prime is 26457312043. The reversal of 26457312042 is 24021375462.

26457312042 is a `hidden beast` number, since 2 + 64 + 573 + 1 + 20 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 26457311988 and 26457312006.

It is not an unprimeable number, because it can be changed into a prime (26457312043) 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 39 ways as a sum of consecutive naturals, for example, 70209 + ... + 240507.

It is an arithmetic number, because the mean of its divisors is an integer number (853100820).

Almost surely, 2^26457312042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26457312042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34124032800).

26457312042 is an abundant number, since it is smaller than the sum of its proper divisors (41790753558).

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

26457312042 is a wasteful number, since it uses less digits than its factorization.

26457312042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170457 (or 170448 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The spelling of 26457312042 in words is "twenty-six billion, four hundred fifty-seven million, three hundred twelve thousand, forty-two".