5312566465 has 4 divisors (see below), whose sum is σ = 6375079764. Its totient is φ = 4250053168.

The previous prime is 5312566447. The next prime is 5312566477. The reversal of 5312566465 is 5646652135.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5646652135 = 5 ⋅1129330427.

It can be written as a sum of positive squares in 2 ways, for example, as 2207402289 + 3105164176 = 46983^2 + 55724^2 .

It is a cyclic number.

It is not a de Polignac number, because 5312566465 - 2⁹ = 5312565953 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 531256642 + ... + 531256651.

It is an arithmetic number, because the mean of its divisors is an integer number (1593769941).

Almost surely, 2^5312566465 is an apocalyptic number.

It is an amenable number.

5312566465 is a deficient number, since it is larger than the sum of its proper divisors (1062513299).

5312566465 is a wasteful number, since it uses less digits than its factorization.

5312566465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062513298.

The product of its digits is 648000, while the sum is 43.

The square root of 5312566465 is about 72887.3546302786. The cubic root of 5312566465 is about 1744.8902884749.

The spelling of 5312566465 in words is "five billion, three hundred twelve million, five hundred sixty-six thousand, four hundred sixty-five".