26739040685 has 16 divisors (see below), whose sum is σ = 36787858176. Its totient is φ = 18276755328.

The previous prime is 26739040681. The next prime is 26739040709. The reversal of 26739040685 is 58604093762.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 26739040685 - 2² = 26739040681 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 (26739040681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1209449 + ... + 1231358.

It is an arithmetic number, because the mean of its divisors is an integer number (2299241136).

Almost surely, 2^26739040685 is an apocalyptic number.

It is an amenable number.

26739040685 is a deficient number, since it is larger than the sum of its proper divisors (10048817491).

26739040685 is a wasteful number, since it uses less digits than its factorization.

26739040685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2441132.

The product of its (nonzero) digits is 2177280, while the sum is 50.

The spelling of 26739040685 in words is "twenty-six billion, seven hundred thirty-nine million, forty thousand, six hundred eighty-five".