26446730664 has 64 divisors (see below), whose sum is σ = 69836912640. Its totient is φ = 8332793280.

The previous prime is 26446730627. The next prime is 26446730669. The reversal of 26446730664 is 46603764462.

It is not an unprimeable number, because it can be changed into a prime (26446730669) 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, 381342 + ... + 445325.

It is an arithmetic number, because the mean of its divisors is an integer number (1091201760).

Almost surely, 2^26446730664 is an apocalyptic number.

26446730664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

26446730664 is an abundant number, since it is smaller than the sum of its proper divisors (43390181976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26446730664 is a wasteful number, since it uses less digits than its factorization.

26446730664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826750 (or 826746 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 48.

The spelling of 26446730664 in words is "twenty-six billion, four hundred forty-six million, seven hundred thirty thousand, six hundred sixty-four".