26015268381 has 16 divisors (see below), whose sum is σ = 35621728128. Its totient is φ = 16878272000.

The previous prime is 26015268361. The next prime is 26015268397. The reversal of 26015268381 is 18386251062.

It is a cyclic number.

It is not a de Polignac number, because 26015268381 - 2¹⁰ = 26015267357 is a prime.

It is a super-2 number, since 2×26015268381² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26015268311) 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, 214401 + ... + 313046.

It is an arithmetic number, because the mean of its divisors is an integer number (2226358008).

Almost surely, 2^26015268381 is an apocalyptic number.

It is an amenable number.

26015268381 is a deficient number, since it is larger than the sum of its proper divisors (9606459747).

26015268381 is a wasteful number, since it uses less digits than its factorization.

26015268381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527892.

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 26015268381 in words is "twenty-six billion, fifteen million, two hundred sixty-eight thousand, three hundred eighty-one".