12135440354 has 16 divisors (see below), whose sum is σ = 18298536120. Its totient is φ = 6036011520.

The previous prime is 12135440341. The next prime is 12135440377. The reversal of 12135440354 is 45304453121.

It can be written as a sum of positive squares in 4 ways, for example, as 10025416129 + 2110024225 = 100127^2 + 45935^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12135440354.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276812 + ... + 317640.

Almost surely, 2^12135440354 is an apocalyptic number.

12135440354 is a deficient number, since it is larger than the sum of its proper divisors (6163095766).

12135440354 is a wasteful number, since it uses less digits than its factorization.

12135440354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41605.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 12135440354 its reverse (45304453121), we get a palindrome (57439893475).

The spelling of 12135440354 in words is "twelve billion, one hundred thirty-five million, four hundred forty thousand, three hundred fifty-four".