13236819403536 has 45 divisors (see below), whose sum is σ = 37044832043271. Its totient is φ = 4412258581536.

The previous prime is 13236819403481. The next prime is 13236819403543. The reversal of 13236819403536 is 63530491863231.

The square root of 13236819403536 is 3638244.

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

13236819403536 is a `hidden beast` number, since 1 + 3 + 2 + 3 + 68 + 1 + 9 + 40 + 3 + 536 = 666.

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, 43507335 + ... + 43810521.

Almost surely, 2^{13236819403536} is an apocalyptic number.

13236819403536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

13236819403536 is the 3638244-th square number.

It is an amenable number.

13236819403536 is an abundant number, since it is smaller than the sum of its proper divisors (23808012639735).

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

13236819403536 is an frugal number, since it uses more digits than its factorization.

13236819403536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606388 (or 303192 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 54.

The spelling of 13236819403536 in words is "thirteen trillion, two hundred thirty-six billion, eight hundred nineteen million, four hundred three thousand, five hundred thirty-six".