13573815958756 has 9 divisors (see below), whose sum is σ = 23754190822761. Its totient is φ = 6786904295112.

The previous prime is 13573815958723. The next prime is 13573815958771. The reversal of 13573815958756 is 65785951837531.

The square root of 13573815958756 is 3684266.

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

It can be written as a sum of positive squares in only one way, i.e., 8116060276900 + 5457755681856 = 2848870^2 + 2336184^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 6447466 + ... + 8289598.

Almost surely, 2^{13573815958756} is an apocalyptic number.

13573815958756 is the 3684266-th square number.

It is an amenable number.

13573815958756 is a deficient number, since it is larger than the sum of its proper divisors (10180374864005).

13573815958756 is an frugal number, since it uses more digits than its factorization.

13573815958756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3684270 (or 1842135 counting only the distinct ones).

The product of its digits is 952560000, while the sum is 73.

It can be divided in two parts, 1357381 and 5958756, that added together give a palindrome (7316137).

The spelling of 13573815958756 in words is "thirteen trillion, five hundred seventy-three billion, eight hundred fifteen million, nine hundred fifty-eight thousand, seven hundred fifty-six".