999142374519 has 24 divisors (see below), whose sum is σ = 1445695505072. Its totient is φ = 664946651520.

The previous prime is 999142374499. The next prime is 999142374551. The reversal of 999142374519 is 915473241999.

999142374519 is a `hidden beast` number, since 9 + 9 + 9 + 1 + 42 + 3 + 74 + 519 = 666.

It is not a de Polignac number, because 999142374519 - 2¹¹ = 999142372471 is a prime.

It is a super-2 number, since 2×999142374519² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999142374589) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13800324 + ... + 13872534.

Almost surely, 2^999142374519 is an apocalyptic number.

999142374519 is a deficient number, since it is larger than the sum of its proper divisors (446553130553).

999142374519 is a wasteful number, since it uses less digits than its factorization.

With its successor (999142374520) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (74844).

With its successor (999142374520) it forms an eRAP, since the sums of their prime factors are consecutive (74847 and 74848).

999142374519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74847 (or 74844 counting only the distinct ones).

The product of its digits is 22044960, while the sum is 63.

The spelling of 999142374519 in words is "nine hundred ninety-nine billion, one hundred forty-two million, three hundred seventy-four thousand, five hundred nineteen".