519279979428 has 144 divisors (see below), whose sum is σ = 1525792509696. Its totient is φ = 145832244480.

The previous prime is 519279979399. The next prime is 519279979429. The reversal of 519279979428 is 824979972915.

It is a happy number.

519279979428 is a `hidden beast` number, since 5 + 192 + 7 + 9 + 9 + 7 + 9 + 428 = 666.

It is not an unprimeable number, because it can be changed into a prime (519279979429) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23708050 + ... + 23729942.

Almost surely, 2^519279979428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 519279979428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (762896254848).

519279979428 is an abundant number, since it is smaller than the sum of its proper divisors (1006512530268).

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

519279979428 is a wasteful number, since it uses less digits than its factorization.

519279979428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23514 (or 23509 counting only the distinct ones).

The product of its digits is 205752960, while the sum is 72.

The spelling of 519279979428 in words is "five hundred nineteen billion, two hundred seventy-nine million, nine hundred seventy-nine thousand, four hundred twenty-eight".