19447036056 has 96 divisors (see below), whose sum is σ = 60216592800. Its totient is φ = 5554137600.

The previous prime is 19447036051. The next prime is 19447036069. The reversal of 19447036056 is 65063074491.

It is a super-2 number, since 2×19447036056² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19447036051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1657860 + ... + 1669548.

It is an arithmetic number, because the mean of its divisors is an integer number (627256175).

Almost surely, 2^19447036056 is an apocalyptic number.

It is an amenable number.

19447036056 is an abundant number, since it is smaller than the sum of its proper divisors (40769556744).

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

19447036056 is a wasteful number, since it uses less digits than its factorization.

19447036056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15009 (or 15002 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 19447036056 in words is "nineteen billion, four hundred forty-seven million, thirty-six thousand, fifty-six".