12881921382 has 48 divisors (see below), whose sum is σ = 30538686672. Its totient is φ = 3892008960.

The previous prime is 12881921303. The next prime is 12881921383. The reversal of 12881921382 is 28312918821.

12881921382 is a `hidden beast` number, since 1 + 2 + 88 + 192 + 1 + 382 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12881921383) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29803 + ... + 163254.

It is an arithmetic number, because the mean of its divisors is an integer number (636222639).

Almost surely, 2^12881921382 is an apocalyptic number.

12881921382 is an abundant number, since it is smaller than the sum of its proper divisors (17656765290).

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

12881921382 is a wasteful number, since it uses less digits than its factorization.

12881921382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193413 (or 193410 counting only the distinct ones).

The product of its digits is 110592, while the sum is 45.

The spelling of 12881921382 in words is "twelve billion, eight hundred eighty-one million, nine hundred twenty-one thousand, three hundred eighty-two".