26215744791 has 16 divisors (see below), whose sum is σ = 36434854784. Its totient is φ = 16750999584.

The previous prime is 26215744783. The next prime is 26215744799. The reversal of 26215744791 is 19744751262.

It is an interprime number because it is at equal distance from previous prime (26215744783) and next prime (26215744799).

It is not a de Polignac number, because 26215744791 - 2³ = 26215744783 is a prime.

It is a Smith number, since the sum of its digits (48) 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 self number, because there is not a number n which added to its sum of digits gives 26215744791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26215744799) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1755085 + ... + 1769958.

It is an arithmetic number, because the mean of its divisors is an integer number (2277178424).

Almost surely, 2^26215744791 is an apocalyptic number.

26215744791 is a deficient number, since it is larger than the sum of its proper divisors (10219109993).

26215744791 is a wasteful number, since it uses less digits than its factorization.

26215744791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3525150.

The product of its digits is 846720, while the sum is 48.

The spelling of 26215744791 in words is "twenty-six billion, two hundred fifteen million, seven hundred forty-four thousand, seven hundred ninety-one".