13540452031252 has 12 divisors (see below), whose sum is σ = 23724653168916. Its totient is φ = 6761979697280.

The previous prime is 13540452031217. The next prime is 13540452031283. The reversal of 13540452031252 is 25213025404531.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1464090320016 + 12076361711236 = 1209996^2 + 3475106^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2061575893 + ... + 2061582460.

It is an arithmetic number, because the mean of its divisors is an integer number (1977054430743).

Almost surely, 2^{13540452031252} is an apocalyptic number.

It is an amenable number.

13540452031252 is a deficient number, since it is larger than the sum of its proper divisors (10184201137664).

13540452031252 is a wasteful number, since it uses less digits than its factorization.

13540452031252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4123159178 (or 4123159176 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 37.

Adding to 13540452031252 its reverse (25213025404531), we get a palindrome (38753477435783).

The spelling of 13540452031252 in words is "thirteen trillion, five hundred forty billion, four hundred fifty-two million, thirty-one thousand, two hundred fifty-two".