26487464436 has 36 divisors (see below), whose sum is σ = 66960669412. Its totient is φ = 8828331264.

The previous prime is 26487464417. The next prime is 26487464461. The reversal of 26487464436 is 63446478462.

26487464436 is a `hidden beast` number, since 2 + 64 + 87 + 464 + 43 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1567684836 + 24919779600 = 39594^2 + 157860^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 451026 + ... + 506358.

Almost surely, 2^26487464436 is an apocalyptic number.

It is an amenable number.

26487464436 is an abundant number, since it is smaller than the sum of its proper divisors (40473204976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26487464436 is a wasteful number, since it uses less digits than its factorization.

26487464436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68640 (or 68635 counting only the distinct ones).

The product of its digits is 18579456, while the sum is 54.

The spelling of 26487464436 in words is "twenty-six billion, four hundred eighty-seven million, four hundred sixty-four thousand, four hundred thirty-six".