12831002780478 has 16 divisors (see below), whose sum is σ = 25662578413440. Its totient is φ = 4276905451416.

The previous prime is 12831002780471. The next prime is 12831002780483. The reversal of 12831002780478 is 87408720013821.

It is a self number, because there is not a number n which added to its sum of digits gives 12831002780478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12831002780471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23577400 + ... + 24115467.

It is an arithmetic number, because the mean of its divisors is an integer number (1603911150840).

Almost surely, 2^{12831002780478} is an apocalyptic number.

12831002780478 is an abundant number, since it is smaller than the sum of its proper divisors (12831575632962).

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

12831002780478 is a wasteful number, since it uses less digits than its factorization.

12831002780478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47737711.

The product of its (nonzero) digits is 1204224, while the sum is 51.

The spelling of 12831002780478 in words is "twelve trillion, eight hundred thirty-one billion, two million, seven hundred eighty thousand, four hundred seventy-eight".