26440666264 has 32 divisors (see below), whose sum is σ = 49991256000. Its totient is φ = 13109958400.

The previous prime is 26440666229. The next prime is 26440666271. The reversal of 26440666264 is 46266604462.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 717489 + ... + 753439.

It is an arithmetic number, because the mean of its divisors is an integer number (1562226750).

Almost surely, 2^26440666264 is an apocalyptic number.

It is an amenable number.

26440666264 is a deficient number, since it is larger than the sum of its proper divisors (23550589736).

26440666264 is a wasteful number, since it uses less digits than its factorization.

26440666264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36723 (or 36719 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 46.

The spelling of 26440666264 in words is "twenty-six billion, four hundred forty million, six hundred sixty-six thousand, two hundred sixty-four".