12782174140 has 12 divisors (see below), whose sum is σ = 26842565736. Its totient is φ = 5112869648.

The previous prime is 12782174137. The next prime is 12782174143. The reversal of 12782174140 is 4147128721.

It is an interprime number because it is at equal distance from previous prime (12782174137) and next prime (12782174143).

It is a self number, because there is not a number n which added to its sum of digits gives 12782174140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12782174143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319554334 + ... + 319554373.

It is an arithmetic number, because the mean of its divisors is an integer number (2236880478).

Almost surely, 2^12782174140 is an apocalyptic number.

12782174140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12782174140 is an abundant number, since it is smaller than the sum of its proper divisors (14060391596).

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

12782174140 is a wasteful number, since it uses less digits than its factorization.

12782174140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639108716 (or 639108714 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 37.

The spelling of 12782174140 in words is "twelve billion, seven hundred eighty-two million, one hundred seventy-four thousand, one hundred forty".