26886468861 has 32 divisors (see below), whose sum is σ = 47501291520. Its totient is φ = 14695707312.

The previous prime is 26886468859. The next prime is 26886468901. The reversal of 26886468861 is 16886468862.

It is not a de Polignac number, because 26886468861 - 2¹ = 26886468859 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26886468461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3088185 + ... + 3096878.

It is an arithmetic number, because the mean of its divisors is an integer number (1484415360).

Almost surely, 2^26886468861 is an apocalyptic number.

26886468861 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

26886468861 is a deficient number, since it is larger than the sum of its proper divisors (20614822659).

26886468861 is a wasteful number, since it uses less digits than its factorization.

26886468861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6185102 (or 6185096 counting only the distinct ones).

The product of its digits is 42467328, while the sum is 63.

Subtracting from 26886468861 its reverse (16886468862), we obtain a palindrome (9999999999).

The spelling of 26886468861 in words is "twenty-six billion, eight hundred eighty-six million, four hundred sixty-eight thousand, eight hundred sixty-one".