12853917640 has 16 divisors (see below), whose sum is σ = 28921314780. Its totient is φ = 5141567040.

The previous prime is 12853917619. The next prime is 12853917761. The reversal of 12853917640 is 4671935821.

It can be written as a sum of positive squares in 2 ways, for example, as 12408623236 + 445294404 = 111394^2 + 21102^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160673931 + ... + 160674010.

It is a 1-persistent number, because it is pandigital, but 2⋅12853917640 = 25707835280 is not.

Almost surely, 2^12853917640 is an apocalyptic number.

12853917640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12853917640 is an abundant number, since it is smaller than the sum of its proper divisors (16067397140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12853917640 is a wasteful number, since it uses less digits than its factorization.

12853917640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321347952 (or 321347948 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 12853917640 in words is "twelve billion, eight hundred fifty-three million, nine hundred seventeen thousand, six hundred forty".