26533803664 has 45 divisors (see below), whose sum is σ = 51923069289. Its totient is φ = 13135610880.

The previous prime is 26533803649. The next prime is 26533803679. The reversal of 26533803664 is 46630833562.

The square root of 26533803664 is 162892.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (26533803649) and next prime (26533803679).

It can be written as a sum of positive squares in only one way, i.e., 6428832400 + 20104971264 = 80180^2 + 141792^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 125752519 + ... + 125752729.

Almost surely, 2^26533803664 is an apocalyptic number.

26533803664 is the 162892-nd square number.

It is an amenable number.

26533803664 is a deficient number, since it is larger than the sum of its proper divisors (25389265625).

26533803664 is an frugal number, since it uses more digits than its factorization.

26533803664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816 (or 406 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 46.

The spelling of 26533803664 in words is "twenty-six billion, five hundred thirty-three million, eight hundred three thousand, six hundred sixty-four".