19355056056 has 96 divisors (see below), whose sum is σ = 62541882000. Its totient is φ = 5530012992.

The previous prime is 19355056031. The next prime is 19355056093. The reversal of 19355056056 is 65065055391.

It is a happy number.

19355056056 is a `hidden beast` number, since 1 + 9 + 35 + 5 + 0 + 5 + 605 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 903771 + ... + 924938.

Almost surely, 2^19355056056 is an apocalyptic number.

It is an amenable number.

19355056056 is an abundant number, since it is smaller than the sum of its proper divisors (43186825944).

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

19355056056 is a wasteful number, since it uses less digits than its factorization.

19355056056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1828738 (or 1828721 counting only the distinct ones).

The product of its (nonzero) digits is 607500, while the sum is 45.

The spelling of 19355056056 in words is "nineteen billion, three hundred fifty-five million, fifty-six thousand, fifty-six".