12821812070 has 48 divisors (see below), whose sum is σ = 24289750800. Its totient is φ = 4872512832.

The previous prime is 12821812051. The next prime is 12821812103. The reversal of 12821812070 is 7021812821.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 780077 + ... + 796343.

It is an arithmetic number, because the mean of its divisors is an integer number (506036475).

Almost surely, 2^12821812070 is an apocalyptic number.

12821812070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12821812070 is a deficient number, since it is larger than the sum of its proper divisors (11467938730).

12821812070 is a wasteful number, since it uses less digits than its factorization.

12821812070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16469 (or 16446 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 32.

The spelling of 12821812070 in words is "twelve billion, eight hundred twenty-one million, eight hundred twelve thousand, seventy".