12351993553252 has 6 divisors (see below), whose sum is σ = 21615988718198. Its totient is φ = 6175996776624.

The previous prime is 12351993553223. The next prime is 12351993553253. The reversal of 12351993553252 is 25235539915321.

It can be written as a sum of positive squares in only one way, i.e., 10443600502336 + 1908393050916 = 3231656^2 + 1381446^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12351993553193 and 12351993553202.

It is not an unprimeable number, because it can be changed into a prime (12351993553253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1543999194153 + ... + 1543999194160.

Almost surely, 2^{12351993553252} is an apocalyptic number.

It is an amenable number.

12351993553252 is a deficient number, since it is larger than the sum of its proper divisors (9263995164946).

12351993553252 is a wasteful number, since it uses less digits than its factorization.

12351993553252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3087998388317 (or 3087998388315 counting only the distinct ones).

The product of its digits is 10935000, while the sum is 55.

The spelling of 12351993553252 in words is "twelve trillion, three hundred fifty-one billion, nine hundred ninety-three million, five hundred fifty-three thousand, two hundred fifty-two".