512220007465 has 4 divisors (see below), whose sum is σ = 614664008964. Its totient is φ = 409776005968.

The previous prime is 512220007451. The next prime is 512220007501. The reversal of 512220007465 is 564700022215.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 376102545984 + 136117461481 = 613272^2 + 368941^2 .

It is a cyclic number.

It is not a de Polignac number, because 512220007465 - 2²¹ = 512217910313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 512220007465.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51222000742 + ... + 51222000751.

It is an arithmetic number, because the mean of its divisors is an integer number (153666002241).

Almost surely, 2^512220007465 is an apocalyptic number.

It is an amenable number.

512220007465 is a deficient number, since it is larger than the sum of its proper divisors (102444001499).

512220007465 is a wasteful number, since it uses less digits than its factorization.

512220007465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102444001498.

The product of its (nonzero) digits is 33600, while the sum is 34.

The spelling of 512220007465 in words is "five hundred twelve billion, two hundred twenty million, seven thousand, four hundred sixty-five".