516499922978 has 90 divisors (see below), whose sum is σ = 876290983173. Its totient is φ = 228316458240.

The previous prime is 516499922963. The next prime is 516499923001. The reversal of 516499922978 is 879229994615.

It can be written as a sum of positive squares in 8 ways, for example, as 282421033489 + 234078889489 = 531433^2 + 483817^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=508183.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 5324741426 + ... + 5324741522.

Almost surely, 2^516499922978 is an apocalyptic number.

516499922978 is a deficient number, since it is larger than the sum of its proper divisors (359791060195).

516499922978 is an frugal number, since it uses more digits than its factorization.

516499922978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310 (or 143 counting only the distinct ones).

The product of its digits is 176359680, while the sum is 71.

The spelling of 516499922978 in words is "five hundred sixteen billion, four hundred ninety-nine million, nine hundred twenty-two thousand, nine hundred seventy-eight".