10312487665 has 4 divisors (see below), whose sum is σ = 12374985204. Its totient is φ = 8249990128.

The previous prime is 10312487659. The next prime is 10312487681. The reversal of 10312487665 is 56678421301.

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 5527030336 + 4785457329 = 74344^2 + 69177^2 .

It is a cyclic number.

It is not a de Polignac number, because 10312487665 - 2¹³ = 10312479473 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, 1031248762 + ... + 1031248771.

It is an arithmetic number, because the mean of its divisors is an integer number (3093746301).

Almost surely, 2^10312487665 is an apocalyptic number.

It is an amenable number.

10312487665 is a deficient number, since it is larger than the sum of its proper divisors (2062497539).

10312487665 is an equidigital number, since it uses as much as digits as its factorization.

10312487665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2062497538.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 10312487665 in words is "ten billion, three hundred twelve million, four hundred eighty-seven thousand, six hundred sixty-five".