26540328739 has 4 divisors (see below), whose sum is σ = 26573629824. Its totient is φ = 26507027656.

The previous prime is 26540328709. The next prime is 26540328823. The reversal of 26540328739 is 93782304562.

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

It is a cyclic number.

It is not a de Polignac number, because 26540328739 - 2²⁹ = 26003457827 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26540328692 and 26540328701.

It is not an unprimeable number, because it can be changed into a prime (26540328709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16649347 + ... + 16650940.

It is an arithmetic number, because the mean of its divisors is an integer number (6643407456).

Almost surely, 2^26540328739 is an apocalyptic number.

26540328739 is a deficient number, since it is larger than the sum of its proper divisors (33301085).

26540328739 is an equidigital number, since it uses as much as digits as its factorization.

26540328739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33301084.

The product of its (nonzero) digits is 2177280, while the sum is 49.

The spelling of 26540328739 in words is "twenty-six billion, five hundred forty million, three hundred twenty-eight thousand, seven hundred thirty-nine".