12874852638 has 80 divisors (see below), whose sum is σ = 29505726096. Its totient is φ = 4194840960.

The previous prime is 12874852631. The next prime is 12874852651. The reversal of 12874852638 is 83625847821.

12874852638 is a `hidden beast` number, since 1 + 2 + 87 + 4 + 8 + 526 + 38 = 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 (12874852631) 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, 1606770 + ... + 1614762.

Almost surely, 2^12874852638 is an apocalyptic number.

12874852638 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12874852638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14752863048).

12874852638 is an abundant number, since it is smaller than the sum of its proper divisors (16630873458).

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

12874852638 is a wasteful number, since it uses less digits than its factorization.

12874852638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8231 (or 8222 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 54.

The spelling of 12874852638 in words is "twelve billion, eight hundred seventy-four million, eight hundred fifty-two thousand, six hundred thirty-eight".