19680828427 has 4 divisors (see below), whose sum is σ = 21194738320. Its totient is φ = 18166918536.

The previous prime is 19680828421. The next prime is 19680828437. The reversal of 19680828427 is 72482808691.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 19680828427 - 2²³ = 19672439819 is a prime.

It is a super-2 number, since 2×19680828427² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19680828421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 756954927 + ... + 756954952.

It is an arithmetic number, because the mean of its divisors is an integer number (5298684580).

Almost surely, 2^19680828427 is an apocalyptic number.

19680828427 is a deficient number, since it is larger than the sum of its proper divisors (1513909893).

19680828427 is a wasteful number, since it uses less digits than its factorization.

19680828427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513909892.

The product of its (nonzero) digits is 3096576, while the sum is 55.

The spelling of 19680828427 in words is "nineteen billion, six hundred eighty million, eight hundred twenty-eight thousand, four hundred twenty-seven".