519218531172 has 144 divisors (see below), whose sum is σ = 1453861491264. Its totient is φ = 154915200000.

The previous prime is 519218531171. The next prime is 519218531191. The reversal of 519218531172 is 271135812915.

519218531172 is a `hidden beast` number, since 5 + 1 + 92 + 18 + 531 + 17 + 2 = 666.

519218531172 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×519218531172² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (519218531171) 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, 79619272 + ... + 79625792.

It is an arithmetic number, because the mean of its divisors is an integer number (10096260356).

Almost surely, 2^519218531172 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 519218531172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (726930745632).

519218531172 is an abundant number, since it is smaller than the sum of its proper divisors (934642960092).

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

519218531172 is a wasteful number, since it uses less digits than its factorization.

519218531172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9610 (or 9605 counting only the distinct ones).

The product of its digits is 151200, while the sum is 45.

The spelling of 519218531172 in words is "five hundred nineteen billion, two hundred eighteen million, five hundred thirty-one thousand, one hundred seventy-two".