26646626044064 has 72 divisors (see below), whose sum is σ = 58341697239420. Its totient is φ = 11966052354048.

The previous prime is 26646626044043. The next prime is 26646626044069. The reversal of 26646626044064 is 46044062664662.

It can be written as a sum of positive squares in 6 ways, for example, as 4936804059664 + 21709821984400 = 2221892^2 + 4659380^2 .

It is not an unprimeable number, because it can be changed into a prime (26646626044069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66384509 + ... + 66784700.

Almost surely, 2^{26646626044064} is an apocalyptic number.

It is an amenable number.

26646626044064 is an abundant number, since it is smaller than the sum of its proper divisors (31695071195356).

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

26646626044064 is a wasteful number, since it uses less digits than its factorization.

26646626044064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133169282 (or 133169261 counting only the distinct ones).

The product of its (nonzero) digits is 47775744, while the sum is 56.

The spelling of 26646626044064 in words is "twenty-six trillion, six hundred forty-six billion, six hundred twenty-six million, forty-four thousand, sixty-four".