26280862686664 has 32 divisors (see below), whose sum is σ = 51419940088320. Its totient is φ = 12568897794816.

The previous prime is 26280862686649. The next prime is 26280862686671. The reversal of 26280862686664 is 46668626808262.

It is a junction number, because it is equal to n+sod(n) for n = 26280862686593 and 26280862686602.

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, 10113577 + ... + 12443719.

It is an arithmetic number, because the mean of its divisors is an integer number (1606873127760).

Almost surely, 2^{26280862686664} is an apocalyptic number.

It is an amenable number.

26280862686664 is a deficient number, since it is larger than the sum of its proper divisors (25139077401656).

26280862686664 is a wasteful number, since it uses less digits than its factorization.

26280862686664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2391469 (or 2391465 counting only the distinct ones).

The product of its (nonzero) digits is 764411904, while the sum is 70.

The spelling of 26280862686664 in words is "twenty-six trillion, two hundred eighty billion, eight hundred sixty-two million, six hundred eighty-six thousand, six hundred sixty-four".