12821417718 has 16 divisors (see below), whose sum is σ = 25644400320. Its totient is φ = 4273545096.

The previous prime is 12821417699. The next prime is 12821417803. The reversal of 12821417718 is 81771412821.

It is a self number, because there is not a number n which added to its sum of digits gives 12821417718.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59721 + ... + 170907.

It is an arithmetic number, because the mean of its divisors is an integer number (1602775020).

Almost surely, 2^12821417718 is an apocalyptic number.

12821417718 is an abundant number, since it is smaller than the sum of its proper divisors (12822982602).

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

12821417718 is a wasteful number, since it uses less digits than its factorization.

12821417718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130411.

The product of its digits is 50176, while the sum is 42.

The spelling of 12821417718 in words is "twelve billion, eight hundred twenty-one million, four hundred seventeen thousand, seven hundred eighteen".