19471459056 has 80 divisors (see below), whose sum is σ = 57511509504. Its totient is φ = 5560918272.

The previous prime is 19471459039. The next prime is 19471459057. The reversal of 19471459056 is 65095417491.

It is a happy number.

It is a super-2 number, since 2×19471459056² (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 (19471459057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 878446 + ... + 900338.

Almost surely, 2^19471459056 is an apocalyptic number.

19471459056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19471459056 is an abundant number, since it is smaller than the sum of its proper divisors (38040050448).

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

19471459056 is a wasteful number, since it uses less digits than its factorization.

19471459056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24558 (or 24552 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 51.

The spelling of 19471459056 in words is "nineteen billion, four hundred seventy-one million, four hundred fifty-nine thousand, fifty-six".