12439155960 has 512 divisors, whose sum is σ = 52242278400. Its totient is φ = 2557440000.

The previous prime is 12439155917. The next prime is 12439156013. The reversal of 12439155960 is 6955193421.

12439155960 is a `hidden beast` number, since 1 + 2 + 4 + 3 + 91 + 559 + 6 + 0 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 8398420 + ... + 8399900.

It is an arithmetic number, because the mean of its divisors is an integer number (102035700).

Almost surely, 2^12439155960 is an apocalyptic number.

12439155960 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 12439155960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26121139200).

12439155960 is an abundant number, since it is smaller than the sum of its proper divisors (39803122440).

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

12439155960 is a wasteful number, since it uses less digits than its factorization.

12439155960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1620 (or 1610 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The spelling of 12439155960 in words is "twelve billion, four hundred thirty-nine million, one hundred fifty-five thousand, nine hundred sixty".