515056616666 has 16 divisors (see below), whose sum is σ = 808611173568. Its totient is φ = 245587214400.

The previous prime is 515056616647. The next prime is 515056616687. The reversal of 515056616666 is 666616650515.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16898495 + ... + 16928946.

It is an arithmetic number, because the mean of its divisors is an integer number (50538198348).

Almost surely, 2^515056616666 is an apocalyptic number.

515056616666 is a deficient number, since it is larger than the sum of its proper divisors (293554556902).

515056616666 is a wasteful number, since it uses less digits than its factorization.

515056616666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33827797.

The product of its (nonzero) digits is 5832000, while the sum is 53.

The spelling of 515056616666 in words is "five hundred fifteen billion, fifty-six million, six hundred sixteen thousand, six hundred sixty-six".