12355051432621 has 4 divisors (see below), whose sum is σ = 12356021001312. Its totient is φ = 12354081863932.

The previous prime is 12355051432583. The next prime is 12355051432697. The reversal of 12355051432621 is 12623415055321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12355051432621 - 2⁹ = 12355051432109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12355051402621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 484765231 + ... + 484790716.

It is an arithmetic number, because the mean of its divisors is an integer number (3089005250328).

Almost surely, 2^{12355051432621} is an apocalyptic number.

It is an amenable number.

12355051432621 is a deficient number, since it is larger than the sum of its proper divisors (969568691).

12355051432621 is an equidigital number, since it uses as much as digits as its factorization.

12355051432621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969568690.

The product of its (nonzero) digits is 216000, while the sum is 40.

Adding to 12355051432621 its reverse (12623415055321), we get a palindrome (24978466487942).

The spelling of 12355051432621 in words is "twelve trillion, three hundred fifty-five billion, fifty-one million, four hundred thirty-two thousand, six hundred twenty-one".