19624904421 has 8 divisors (see below), whose sum is σ = 26179650144. Its totient is φ = 13076714160.

The previous prime is 19624904419. The next prime is 19624904443. The reversal of 19624904421 is 12440942691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19624904421 - 2¹ = 19624904419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19624904401) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1631875 + ... + 1643856.

It is an arithmetic number, because the mean of its divisors is an integer number (3272456268).

Almost surely, 2^19624904421 is an apocalyptic number.

It is an amenable number.

19624904421 is a deficient number, since it is larger than the sum of its proper divisors (6554745723).

19624904421 is a wasteful number, since it uses less digits than its factorization.

19624904421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3277731.

The product of its (nonzero) digits is 124416, while the sum is 42.

The spelling of 19624904421 in words is "nineteen billion, six hundred twenty-four million, nine hundred four thousand, four hundred twenty-one".