12354378876 has 120 divisors (see below), whose sum is σ = 37180969056. Its totient is φ = 3503969280.

The previous prime is 12354378859. The next prime is 12354378877. The reversal of 12354378876 is 67887345321.

It is a happy number.

12354378876 is a `hidden beast` number, since 1 + 23 + 543 + 7 + 8 + 8 + 76 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12354378877) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 290836 + ... + 330596.

Almost surely, 2^12354378876 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12354378876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18590484528).

12354378876 is an abundant number, since it is smaller than the sum of its proper divisors (24826590180).

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

12354378876 is a wasteful number, since it uses less digits than its factorization.

12354378876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39921 (or 39910 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 54.

The spelling of 12354378876 in words is "twelve billion, three hundred fifty-four million, three hundred seventy-eight thousand, eight hundred seventy-six".