19520960421 has 8 divisors (see below), whose sum is σ = 26045940544. Its totient is φ = 13004976960.

The previous prime is 19520960387. The next prime is 19520960429. The reversal of 19520960421 is 12406902591.

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

It is not a de Polignac number, because 19520960421 - 2⁶ = 19520960357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19520960421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19520960429) 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, 2244100 + ... + 2252781.

It is an arithmetic number, because the mean of its divisors is an integer number (3255742568).

Almost surely, 2^19520960421 is an apocalyptic number.

It is an amenable number.

19520960421 is a deficient number, since it is larger than the sum of its proper divisors (6524980123).

19520960421 is a wasteful number, since it uses less digits than its factorization.

19520960421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4498331.

The product of its (nonzero) digits is 38880, while the sum is 39.

The spelling of 19520960421 in words is "nineteen billion, five hundred twenty million, nine hundred sixty thousand, four hundred twenty-one".