13212142546 has 4 divisors (see below), whose sum is σ = 19818213822. Its totient is φ = 6606071272.

The previous prime is 13212142459. The next prime is 13212142579. The reversal of 13212142546 is 64524121231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64524121231 = 17 ⋅3795536543.

It can be written as a sum of positive squares in only one way, i.e., 12873398521 + 338744025 = 113461^2 + 18405^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3303035635 + ... + 3303035638.

Almost surely, 2^13212142546 is an apocalyptic number.

13212142546 is a deficient number, since it is larger than the sum of its proper divisors (6606071276).

13212142546 is an equidigital number, since it uses as much as digits as its factorization.

13212142546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6606071275.

The product of its digits is 11520, while the sum is 31.

Adding to 13212142546 its reverse (64524121231), we get a palindrome (77736263777).

The spelling of 13212142546 in words is "thirteen billion, two hundred twelve million, one hundred forty-two thousand, five hundred forty-six".