519816254142 has 24 divisors (see below), whose sum is σ = 1097229881736. Its totient is φ = 164152500624.

The previous prime is 519816254107. The next prime is 519816254201. The reversal of 519816254142 is 241452618915.

It is a junction number, because it is equal to n+sod(n) for n = 519816254091 and 519816254100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 119992353 + ... + 119996684.

It is an arithmetic number, because the mean of its divisors is an integer number (45717911739).

Almost surely, 2^519816254142 is an apocalyptic number.

519816254142 is an abundant number, since it is smaller than the sum of its proper divisors (577413627594).

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

519816254142 is a wasteful number, since it uses less digits than its factorization.

519816254142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239989080 (or 239989061 counting only the distinct ones).

The product of its digits is 691200, while the sum is 48.

The spelling of 519816254142 in words is "five hundred nineteen billion, eight hundred sixteen million, two hundred fifty-four thousand, one hundred forty-two".