26142405745 has 4 divisors (see below), whose sum is σ = 31370886900. Its totient is φ = 20913924592.

The previous prime is 26142405739. The next prime is 26142405749. The reversal of 26142405745 is 54750424162.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3939319696 + 22203086049 = 62764^2 + 149007^2 .

It is a cyclic number.

It is not a de Polignac number, because 26142405745 - 2⁵ = 26142405713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26142405698 and 26142405707.

It is not an unprimeable number, because it can be changed into a prime (26142405749) 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 3 ways as a sum of consecutive naturals, for example, 2614240570 + ... + 2614240579.

It is an arithmetic number, because the mean of its divisors is an integer number (7842721725).

Almost surely, 2^26142405745 is an apocalyptic number.

It is an amenable number.

26142405745 is a deficient number, since it is larger than the sum of its proper divisors (5228481155).

26142405745 is an equidigital number, since it uses as much as digits as its factorization.

26142405745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5228481154.

The product of its (nonzero) digits is 268800, while the sum is 40.

The spelling of 26142405745 in words is "twenty-six billion, one hundred forty-two million, four hundred five thousand, seven hundred forty-five".