12840431804 has 6 divisors (see below), whose sum is σ = 22470755664. Its totient is φ = 6420215900.

The previous prime is 12840431803. The next prime is 12840431809. The reversal of 12840431804 is 40813404821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12840431801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1605053972 + ... + 1605053979.

It is an arithmetic number, because the mean of its divisors is an integer number (3745125944).

Almost surely, 2^12840431804 is an apocalyptic number.

It is an amenable number.

12840431804 is a deficient number, since it is larger than the sum of its proper divisors (9630323860).

12840431804 is a wasteful number, since it uses less digits than its factorization.

12840431804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3210107955 (or 3210107953 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 35.

The spelling of 12840431804 in words is "twelve billion, eight hundred forty million, four hundred thirty-one thousand, eight hundred four".