19223864012 has 24 divisors (see below), whose sum is σ = 34469136240. Its totient is φ = 9375632640.

The previous prime is 19223863991. The next prime is 19223864081. The reversal of 19223864012 is 21046832291.

It is a super-2 number, since 2×19223864012² (a number of 21 digits) contains 22 as substring.

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, 1200563 + ... + 1216469.

It is an arithmetic number, because the mean of its divisors is an integer number (1436214010).

Almost surely, 2^19223864012 is an apocalyptic number.

It is an amenable number.

19223864012 is a deficient number, since it is larger than the sum of its proper divisors (15245272228).

19223864012 is a wasteful number, since it uses less digits than its factorization.

19223864012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23321 (or 23319 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The spelling of 19223864012 in words is "nineteen billion, two hundred twenty-three million, eight hundred sixty-four thousand, twelve".