12135250143 has 12 divisors (see below), whose sum is σ = 18177905928. Its totient is φ = 8090166600.

The previous prime is 12135250103. The next prime is 12135250157. The reversal of 12135250143 is 34105253121.

12135250143 is a `hidden beast` number, since 121 + 3 + 525 + 0 + 14 + 3 = 666.

It is not a de Polignac number, because 12135250143 - 2¹⁷ = 12135119071 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12135250103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24969408 + ... + 24969893.

It is an arithmetic number, because the mean of its divisors is an integer number (1514825494).

Almost surely, 2^12135250143 is an apocalyptic number.

12135250143 is a deficient number, since it is larger than the sum of its proper divisors (6042655785).

12135250143 is an frugal number, since it uses more digits than its factorization.

12135250143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49939316 (or 49939304 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The spelling of 12135250143 in words is "twelve billion, one hundred thirty-five million, two hundred fifty thousand, one hundred forty-three".