19958223312 has 80 divisors (see below), whose sum is σ = 60657367680. Its totient is φ = 6261401088.

The previous prime is 19958223301. The next prime is 19958223331. The reversal of 19958223312 is 21332285991.

19958223312 is a `hidden beast` number, since 19 + 9 + 582 + 23 + 31 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1351468 + ... + 1366155.

It is an arithmetic number, because the mean of its divisors is an integer number (758217096).

Almost surely, 2^19958223312 is an apocalyptic number.

19958223312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19958223312 is an abundant number, since it is smaller than the sum of its proper divisors (40699144368).

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

19958223312 is a wasteful number, since it uses less digits than its factorization.

19958223312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2717657 (or 2717645 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The spelling of 19958223312 in words is "nineteen billion, nine hundred fifty-eight million, two hundred twenty-three thousand, three hundred twelve".