519679942564 has 6 divisors (see below), whose sum is σ = 909439899494. Its totient is φ = 259839971280.

The previous prime is 519679942549. The next prime is 519679942567. The reversal of 519679942564 is 465249976915.

It can be written as a sum of positive squares in only one way, i.e., 503237009664 + 16442932900 = 709392^2 + 128230^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 519679942564.

It is not an unprimeable number, because it can be changed into a prime (519679942567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64959992817 + ... + 64959992824.

Almost surely, 2^519679942564 is an apocalyptic number.

It is an amenable number.

519679942564 is a deficient number, since it is larger than the sum of its proper divisors (389759956930).

519679942564 is a wasteful number, since it uses less digits than its factorization.

519679942564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129919985645 (or 129919985643 counting only the distinct ones).

The product of its digits is 146966400, while the sum is 67.

The spelling of 519679942564 in words is "five hundred nineteen billion, six hundred seventy-nine million, nine hundred forty-two thousand, five hundred sixty-four".