26261238779 has 8 divisors (see below), whose sum is σ = 26925137232. Its totient is φ = 25598453760.

The previous prime is 26261238739. The next prime is 26261238791. The reversal of 26261238779 is 97783216262.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26261238779 is a prime.

It is a super-3 number, since 3×26261238779³ (a number of 32 digits) contains 333 as substring.

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 26261238779.

It is not an unprimeable number, because it can be changed into a prime (26261238739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230489 + ... + 325034.

It is an arithmetic number, because the mean of its divisors is an integer number (3365642154).

Almost surely, 2^26261238779 is an apocalyptic number.

26261238779 is a deficient number, since it is larger than the sum of its proper divisors (663898453).

26261238779 is a wasteful number, since it uses less digits than its factorization.

26261238779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556717.

The product of its digits is 3048192, while the sum is 53.

The spelling of 26261238779 in words is "twenty-six billion, two hundred sixty-one million, two hundred thirty-eight thousand, seven hundred seventy-nine".