26381623287 has 16 divisors (see below), whose sum is σ = 35499709440. Its totient is φ = 17426244000.

The previous prime is 26381623243. The next prime is 26381623297. The reversal of 26381623287 is 78232618362.

It is a happy number.

It is not a de Polignac number, because 26381623287 - 2¹⁴ = 26381606903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26381623297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101362 + ... + 251072.

It is an arithmetic number, because the mean of its divisors is an integer number (2218731840).

Almost surely, 2^26381623287 is an apocalyptic number.

26381623287 is a deficient number, since it is larger than the sum of its proper divisors (9118086153).

26381623287 is a wasteful number, since it uses less digits than its factorization.

26381623287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150254.

The product of its digits is 1161216, while the sum is 48.

The spelling of 26381623287 in words is "twenty-six billion, three hundred eighty-one million, six hundred twenty-three thousand, two hundred eighty-seven".