26001012765 has 32 divisors (see below), whose sum is σ = 51201997056. Its totient is φ = 10971855360.

The previous prime is 26001012749. The next prime is 26001012767. The reversal of 26001012765 is 56721010062.

It is not a de Polignac number, because 26001012765 - 2⁴ = 26001012749 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26001012767) 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 31 ways as a sum of consecutive naturals, for example, 9522816 + ... + 9525545.

It is an arithmetic number, because the mean of its divisors is an integer number (1600062408).

Almost surely, 2^26001012765 is an apocalyptic number.

It is an amenable number.

26001012765 is a deficient number, since it is larger than the sum of its proper divisors (25200984291).

26001012765 is a wasteful number, since it uses less digits than its factorization.

26001012765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19048389.

The product of its (nonzero) digits is 5040, while the sum is 30.

The spelling of 26001012765 in words is "twenty-six billion, one million, twelve thousand, seven hundred sixty-five".