12857570940 has 144 divisors (see below), whose sum is σ = 38097561600. Its totient is φ = 3239533440.

The previous prime is 12857570927. The next prime is 12857570941. The reversal of 12857570940 is 4907575821.

It is a self number, because there is not a number n which added to its sum of digits gives 12857570940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12857570941) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12973845 + ... + 12974835.

It is an arithmetic number, because the mean of its divisors is an integer number (264566400).

Almost surely, 2^12857570940 is an apocalyptic number.

12857570940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12857570940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19048780800).

12857570940 is an abundant number, since it is smaller than the sum of its proper divisors (25239990660).

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

12857570940 is a wasteful number, since it uses less digits than its factorization.

12857570940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1640 (or 1619 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 48.

The spelling of 12857570940 in words is "twelve billion, eight hundred fifty-seven million, five hundred seventy thousand, nine hundred forty".