26729645742 has 48 divisors (see below), whose sum is σ = 58204523520. Its totient is φ = 8865306576.

The previous prime is 26729645731. The next prime is 26729645743. The reversal of 26729645742 is 24754692762.

It is a happy number.

26729645742 is a `hidden beast` number, since 2 + 6 + 7 + 2 + 9 + 64 + 574 + 2 = 666.

It is a super-2 number, since 2×26729645742² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26729645743) 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, 4574859 + ... + 4580697.

It is an arithmetic number, because the mean of its divisors is an integer number (1212594240).

Almost surely, 2^26729645742 is an apocalyptic number.

26729645742 is an abundant number, since it is smaller than the sum of its proper divisors (31474877778).

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

26729645742 is a wasteful number, since it uses less digits than its factorization.

26729645742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7077 (or 7074 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 54.

The spelling of 26729645742 in words is "twenty-six billion, seven hundred twenty-nine million, six hundred forty-five thousand, seven hundred forty-two".