319469656428 has 144 divisors (see below), whose sum is σ = 904185318400. Its totient is φ = 94442474880.

The previous prime is 319469656321. The next prime is 319469656447. The reversal of 319469656428 is 824656964913.

319469656428 is a `hidden beast` number, since 3 + 1 + 9 + 4 + 69 + 6 + 564 + 2 + 8 = 666.

It is a super-2 number, since 2×319469656428² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1937403 + ... + 2095821.

Almost surely, 2^319469656428 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 319469656428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (452092659200).

319469656428 is an abundant number, since it is smaller than the sum of its proper divisors (584715661972).

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

319469656428 is a wasteful number, since it uses less digits than its factorization.

319469656428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158612 (or 158607 counting only the distinct ones).

The product of its digits is 67184640, while the sum is 63.

The spelling of 319469656428 in words is "three hundred nineteen billion, four hundred sixty-nine million, six hundred fifty-six thousand, four hundred twenty-eight".