26490224872 has 8 divisors (see below), whose sum is σ = 49669171650. Its totient is φ = 13245112432.

The previous prime is 26490224837. The next prime is 26490224911. The reversal of 26490224872 is 27842209462.

It can be written as a sum of positive squares in only one way, i.e., 20685918276 + 5804306596 = 143826^2 + 76186^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1655639047 + ... + 1655639062.

Almost surely, 2^26490224872 is an apocalyptic number.

It is an amenable number.

26490224872 is a deficient number, since it is larger than the sum of its proper divisors (23178946778).

26490224872 is a wasteful number, since it uses less digits than its factorization.

26490224872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3311278115 (or 3311278111 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 46.

The spelling of 26490224872 in words is "twenty-six billion, four hundred ninety million, two hundred twenty-four thousand, eight hundred seventy-two".