12551530021431 has 8 divisors (see below), whose sum is σ = 16742349350400. Its totient is φ = 8364198686712.

The previous prime is 12551530021357. The next prime is 12551530021439. The reversal of 12551530021431 is 13412003515521.

12551530021431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12551530021431 - 2²⁶ = 12551462912567 is a prime.

It is a super-2 number, since 2×12551530021431² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12551530021392 and 12551530021401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12551530021439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 871990165 + ... + 872004558.

It is an arithmetic number, because the mean of its divisors is an integer number (2092793668800).

Almost surely, 2^{12551530021431} is an apocalyptic number.

12551530021431 is a deficient number, since it is larger than the sum of its proper divisors (4190819328969).

12551530021431 is a wasteful number, since it uses less digits than its factorization.

12551530021431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1743997125.

The product of its (nonzero) digits is 18000, while the sum is 33.

Adding to 12551530021431 its reverse (13412003515521), we get a palindrome (25963533536952).

The spelling of 12551530021431 in words is "twelve trillion, five hundred fifty-one billion, five hundred thirty million, twenty-one thousand, four hundred thirty-one".