26646041455664 has 40 divisors (see below), whose sum is σ = 51783236203920. Its totient is φ = 13282630760448.

The previous prime is 26646041455661. The next prime is 26646041455757. The reversal of 26646041455664 is 46655414064662.

It is not an unprimeable number, because it can be changed into a prime (26646041455661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88078292 + ... + 88380300.

It is an arithmetic number, because the mean of its divisors is an integer number (1294580905098).

Almost surely, 2^{26646041455664} is an apocalyptic number.

It is an amenable number.

26646041455664 is a deficient number, since it is larger than the sum of its proper divisors (25137194748256).

26646041455664 is a wasteful number, since it uses less digits than its factorization.

26646041455664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318717 (or 318711 counting only the distinct ones).

The product of its (nonzero) digits is 99532800, while the sum is 59.

The spelling of 26646041455664 in words is "twenty-six trillion, six hundred forty-six billion, forty-one million, four hundred fifty-five thousand, six hundred sixty-four".