12351556011 has 4 divisors (see below), whose sum is σ = 16468741352. Its totient is φ = 8234370672.

The previous prime is 12351555977. The next prime is 12351556033. The reversal of 12351556011 is 11065515321.

12351556011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12351556011 - 2²¹ = 12349458859 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12351556011.

It is not an unprimeable number, because it can be changed into a prime (12351556051) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2058592666 + ... + 2058592671.

It is an arithmetic number, because the mean of its divisors is an integer number (4117185338).

Almost surely, 2^12351556011 is an apocalyptic number.

12351556011 is a deficient number, since it is larger than the sum of its proper divisors (4117185341).

12351556011 is an equidigital number, since it uses as much as digits as its factorization.

12351556011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4117185340.

The product of its (nonzero) digits is 4500, while the sum is 30.

The spelling of 12351556011 in words is "twelve billion, three hundred fifty-one million, five hundred fifty-six thousand, eleven".