26871870864 has 40 divisors (see below), whose sum is σ = 71658326272. Its totient is φ = 8668344960.

The previous prime is 26871870859. The next prime is 26871870869. The reversal of 26871870864 is 46807817862.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (26871870859) and next prime (26871870869).

It is not an unprimeable number, because it can be changed into a prime (26871870869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9028039 + ... + 9031014.

Almost surely, 2^26871870864 is an apocalyptic number.

26871870864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

26871870864 is an abundant number, since it is smaller than the sum of its proper divisors (44786455408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26871870864 is a wasteful number, since it uses less digits than its factorization.

26871870864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18059095 (or 18059089 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 57.

The spelling of 26871870864 in words is "twenty-six billion, eight hundred seventy-one million, eight hundred seventy thousand, eight hundred sixty-four".