12811540435 has 16 divisors (see below), whose sum is σ = 15536085120. Its totient is φ = 10141206400.

The previous prime is 12811540429. The next prime is 12811540451. The reversal of 12811540435 is 53404511821.

It is not a de Polignac number, because 12811540435 - 2⁵ = 12811540403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12811540435.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 867846 + ... + 882484.

It is an arithmetic number, because the mean of its divisors is an integer number (971005320).

Almost surely, 2^12811540435 is an apocalyptic number.

12811540435 is a deficient number, since it is larger than the sum of its proper divisors (2724544685).

12811540435 is a wasteful number, since it uses less digits than its factorization.

12811540435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16478.

The product of its (nonzero) digits is 19200, while the sum is 34.

The spelling of 12811540435 in words is "twelve billion, eight hundred eleven million, five hundred forty thousand, four hundred thirty-five".