12885840342840 has 64 divisors (see below), whose sum is σ = 38675816877600. Its totient is φ = 3434597793792.

The previous prime is 12885840342811. The next prime is 12885840342887. The reversal of 12885840342840 is 4824304858821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25156285 + ... + 25663404.

Almost surely, 2^{12885840342840} is an apocalyptic number.

12885840342840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12885840342840 is an abundant number, since it is smaller than the sum of its proper divisors (25789976534760).

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

12885840342840 is a wasteful number, since it uses less digits than its factorization.

12885840342840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50821816 (or 50821812 counting only the distinct ones).

The product of its (nonzero) digits is 15728640, while the sum is 57.

The spelling of 12885840342840 in words is "twelve trillion, eight hundred eighty-five billion, eight hundred forty million, three hundred forty-two thousand, eight hundred forty".