26765438636 has 6 divisors (see below), whose sum is σ = 46839517620. Its totient is φ = 13382719316.

The previous prime is 26765438633. The next prime is 26765438699. The reversal of 26765438636 is 63683456762.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (26765438633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3345679826 + ... + 3345679833.

It is an arithmetic number, because the mean of its divisors is an integer number (7806586270).

Almost surely, 2^26765438636 is an apocalyptic number.

It is an amenable number.

26765438636 is a deficient number, since it is larger than the sum of its proper divisors (20074078984).

26765438636 is a wasteful number, since it uses less digits than its factorization.

26765438636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6691359663 (or 6691359661 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 56.

The spelling of 26765438636 in words is "twenty-six billion, seven hundred sixty-five million, four hundred thirty-eight thousand, six hundred thirty-six".