12852687380 has 48 divisors (see below), whose sum is σ = 29775819024. Its totient is φ = 4629857280.

The previous prime is 12852687371. The next prime is 12852687391. The reversal of 12852687380 is 8378625821.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1323940996 + 11528746384 = 36386^2 + 107372^2 .

It is a super-2 number, since 2×12852687380² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 592187 + ... + 613506.

It is an arithmetic number, because the mean of its divisors is an integer number (620329563).

Almost surely, 2^12852687380 is an apocalyptic number.

12852687380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12852687380 is an abundant number, since it is smaller than the sum of its proper divisors (16923131644).

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

12852687380 is a wasteful number, since it uses less digits than its factorization.

12852687380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1205756 (or 1205754 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 12852687380 in words is "twelve billion, eight hundred fifty-two million, six hundred eighty-seven thousand, three hundred eighty".