19424472480 has 144 divisors (see below), whose sum is σ = 75755481984. Its totient is φ = 4439877120.

The previous prime is 19424472479. The next prime is 19424472523. The reversal of 19424472480 is 8427442491.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×19424472480² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 953436 + ... + 973595.

It is an arithmetic number, because the mean of its divisors is an integer number (526079736).

Almost surely, 2^19424472480 is an apocalyptic number.

19424472480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19424472480 is an abundant number, since it is smaller than the sum of its proper divisors (56331009504).

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

19424472480 is a wasteful number, since it uses less digits than its factorization.

19424472480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1927059 (or 1927048 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The spelling of 19424472480 in words is "nineteen billion, four hundred twenty-four million, four hundred seventy-two thousand, four hundred eighty".