581223394012 has 24 divisors (see below), whose sum is σ = 1071273400400. Its totient is φ = 275162386176.

The previous prime is 581223394007. The next prime is 581223394043. The reversal of 581223394012 is 210493322185.

It is a super-2 number, since 2×581223394012² (a number of 24 digits) contains 22 as substring.

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, 2001453 + ... + 2273380.

Almost surely, 2^581223394012 is an apocalyptic number.

It is an amenable number.

581223394012 is a deficient number, since it is larger than the sum of its proper divisors (490050006388).

581223394012 is a wasteful number, since it uses less digits than its factorization.

581223394012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4276645 (or 4276643 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 581223394012 in words is "five hundred eighty-one billion, two hundred twenty-three million, three hundred ninety-four thousand, twelve".