26631604466 has 8 divisors (see below), whose sum is σ = 39953318124. Its totient is φ = 13313831760.

The previous prime is 26631604453. The next prime is 26631604511. The reversal of 26631604466 is 66440613662.

It is a happy number.

26631604466 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 22633698025 + 3997906441 = 150445^2 + 63229^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×26631604466² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 968285 + ... + 995408.

Almost surely, 2^26631604466 is an apocalyptic number.

26631604466 is a deficient number, since it is larger than the sum of its proper divisors (13321713658).

26631604466 is a wasteful number, since it uses less digits than its factorization.

26631604466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1970476.

The product of its (nonzero) digits is 746496, while the sum is 44.

The spelling of 26631604466 in words is "twenty-six billion, six hundred thirty-one million, six hundred four thousand, four hundred sixty-six".