821033418028 has 12 divisors (see below), whose sum is σ = 1437928372440. Its totient is φ = 410196740192.

The previous prime is 821033418019. The next prime is 821033418047. The reversal of 821033418028 is 820814330128.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79986433 + ... + 79996696.

It is an arithmetic number, because the mean of its divisors is an integer number (119827364370).

Almost surely, 2^821033418028 is an apocalyptic number.

It is an amenable number.

821033418028 is a deficient number, since it is larger than the sum of its proper divisors (616894954412).

821033418028 is a wasteful number, since it uses less digits than its factorization.

821033418028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159984416 (or 159984414 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The spelling of 821033418028 in words is "eight hundred twenty-one billion, thirty-three million, four hundred eighteen thousand, twenty-eight".