12621542275 has 12 divisors (see below), whose sum is σ = 16155575104. Its totient is φ = 9771516000.

The previous prime is 12621542267. The next prime is 12621542299. The reversal of 12621542275 is 57224512621.

12621542275 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12621542275 - 2³ = 12621542267 is a prime.

It is a super-2 number, since 2×12621542275² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8142156 + ... + 8143705.

Almost surely, 2^12621542275 is an apocalyptic number.

12621542275 is a deficient number, since it is larger than the sum of its proper divisors (3534032829).

12621542275 is a wasteful number, since it uses less digits than its factorization.

12621542275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16285902 (or 16285897 counting only the distinct ones).

The product of its digits is 67200, while the sum is 37.

It can be divided in two parts, 126215 and 42275, that added together give a triangular number (168490 = T₅₈₀).

The spelling of 12621542275 in words is "twelve billion, six hundred twenty-one million, five hundred forty-two thousand, two hundred seventy-five".