26215387079 has 16 divisors (see below), whose sum is σ = 30322575360. Its totient is φ = 22199158080.

The previous prime is 26215387069. The next prime is 26215387087. The reversal of 26215387079 is 97078351262.

It is a cyclic number.

It is not a de Polignac number, because 26215387079 - 2¹² = 26215382983 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26215387049) 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 15 ways as a sum of consecutive naturals, for example, 749822 + ... + 784004.

It is an arithmetic number, because the mean of its divisors is an integer number (1895160960).

Almost surely, 2^26215387079 is an apocalyptic number.

26215387079 is a deficient number, since it is larger than the sum of its proper divisors (4107188281).

26215387079 is a wasteful number, since it uses less digits than its factorization.

26215387079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35510.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The spelling of 26215387079 in words is "twenty-six billion, two hundred fifteen million, three hundred eighty-seven thousand, seventy-nine".