26912786639 has 8 divisors (see below), whose sum is σ = 27049193952. Its totient is φ = 26776723680.

The previous prime is 26912786587. The next prime is 26912786651. The reversal of 26912786639 is 93668721962.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26912786639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26912786699) 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, 71342 + ... + 242724.

It is an arithmetic number, because the mean of its divisors is an integer number (3381149244).

Almost surely, 2^26912786639 is an apocalyptic number.

26912786639 is a deficient number, since it is larger than the sum of its proper divisors (136407313).

26912786639 is a wasteful number, since it uses less digits than its factorization.

26912786639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172177.

The product of its digits is 11757312, while the sum is 59.

The spelling of 26912786639 in words is "twenty-six billion, nine hundred twelve million, seven hundred eighty-six thousand, six hundred thirty-nine".