26139338866 has 16 divisors (see below), whose sum is σ = 40280431680. Its totient is φ = 12712734000.

The previous prime is 26139338861. The next prime is 26139338881. The reversal of 26139338866 is 66883393162.

It is not an unprimeable number, because it can be changed into a prime (26139338861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213741 + ... + 312991.

It is an arithmetic number, because the mean of its divisors is an integer number (2517526980).

Almost surely, 2^26139338866 is an apocalyptic number.

26139338866 is a deficient number, since it is larger than the sum of its proper divisors (14141092814).

26139338866 is a wasteful number, since it uses less digits than its factorization.

26139338866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102849.

The product of its digits is 6718464, while the sum is 55.

The spelling of 26139338866 in words is "twenty-six billion, one hundred thirty-nine million, three hundred thirty-eight thousand, eight hundred sixty-six".