12374644878 has 24 divisors (see below), whose sum is σ = 27016405416. Its totient is φ = 4093393200.

The previous prime is 12374644871. The next prime is 12374644949. The reversal of 12374644878 is 87844647321.

12374644878 is a `hidden beast` number, since 123 + 7 + 4 + 6 + 448 + 78 = 666.

It is a super-2 number, since 2×12374644878² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12374644871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2621613 + ... + 2626328.

It is an arithmetic number, because the mean of its divisors is an integer number (1125683559).

Almost surely, 2^12374644878 is an apocalyptic number.

12374644878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12374644878 is an abundant number, since it is smaller than the sum of its proper divisors (14641760538).

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

12374644878 is a wasteful number, since it uses less digits than its factorization.

12374644878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5248080 (or 5248077 counting only the distinct ones).

The product of its digits is 7225344, while the sum is 54.

The spelling of 12374644878 in words is "twelve billion, three hundred seventy-four million, six hundred forty-four thousand, eight hundred seventy-eight".