19227988690556 has 48 divisors (see below), whose sum is σ = 36498524559840. Its totient is φ = 8827478599680.

The previous prime is 19227988690499. The next prime is 19227988690639. The reversal of 19227988690556 is 65509688972291.

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, 99722450 + ... + 99915078.

It is an arithmetic number, because the mean of its divisors is an integer number (760385928330).

Almost surely, 2^{19227988690556} is an apocalyptic number.

It is an amenable number.

19227988690556 is a deficient number, since it is larger than the sum of its proper divisors (17270535869284).

19227988690556 is a wasteful number, since it uses less digits than its factorization.

19227988690556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228494 (or 228492 counting only the distinct ones).

The product of its (nonzero) digits is 1175731200, while the sum is 77.

The spelling of 19227988690556 in words is "nineteen trillion, two hundred twenty-seven billion, nine hundred eighty-eight million, six hundred ninety thousand, five hundred fifty-six".