512561663650 has 48 divisors (see below), whose sum is σ = 956673885024. Its totient is φ = 204313719680.

The previous prime is 512561663639. The next prime is 512561663671. The reversal of 512561663650 is 56366165215.

It is a self number, because there is not a number n which added to its sum of digits gives 512561663650.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33182829 + ... + 33198271.

It is an arithmetic number, because the mean of its divisors is an integer number (19930705938).

Almost surely, 2^512561663650 is an apocalyptic number.

512561663650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

512561663650 is a deficient number, since it is larger than the sum of its proper divisors (444112221374).

512561663650 is a wasteful number, since it uses less digits than its factorization.

512561663650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17715 (or 17710 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 46.

The spelling of 512561663650 in words is "five hundred twelve billion, five hundred sixty-one million, six hundred sixty-three thousand, six hundred fifty".