12315018870 has 512 divisors, whose sum is σ = 42440785920. Its totient is φ = 2498428800.

The previous prime is 12315018857. The next prime is 12315018871. The reversal of 12315018870 is 7881051321.

12315018870 is a `hidden beast` number, since 1 + 2 + 3 + 1 + 501 + 88 + 70 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12315018871) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 119563239 + ... + 119563341.

It is an arithmetic number, because the mean of its divisors is an integer number (82892160).

Almost surely, 2^12315018870 is an apocalyptic number.

12315018870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12315018870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21220392960).

12315018870 is an abundant number, since it is smaller than the sum of its proper divisors (30125767050).

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

12315018870 is a wasteful number, since it uses less digits than its factorization.

12315018870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 36.

The spelling of 12315018870 in words is "twelve billion, three hundred fifteen million, eighteen thousand, eight hundred seventy".