26242480666 has 4 divisors (see below), whose sum is σ = 39363721002. Its totient is φ = 13121240332.

The previous prime is 26242480657. The next prime is 26242480681. The reversal of 26242480666 is 66608424262.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 26156269441 + 86211225 = 161729^2 + 9285^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6560620165 + ... + 6560620168.

Almost surely, 2^26242480666 is an apocalyptic number.

26242480666 is a deficient number, since it is larger than the sum of its proper divisors (13121240336).

26242480666 is a wasteful number, since it uses less digits than its factorization.

26242480666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13121240335.

The product of its (nonzero) digits is 1327104, while the sum is 46.

The spelling of 26242480666 in words is "twenty-six billion, two hundred forty-two million, four hundred eighty thousand, six hundred sixty-six".