7587312643 has 2 divisors, whose sum is σ = 7587312644. Its totient is φ = 7587312642.

The previous prime is 7587312631. The next prime is 7587312671. The reversal of 7587312643 is 3462137857.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (3462137857) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7587312643 - 2¹³ = 7587304451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7587312593 and 7587312602.

It is not a weakly prime, because it can be changed into another prime (7587312443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3793656321 + 3793656322.

It is an arithmetic number, because the mean of its divisors is an integer number (3793656322).

Almost surely, 2^7587312643 is an apocalyptic number.

7587312643 is a deficient number, since it is larger than the sum of its proper divisors (1).

7587312643 is an equidigital number, since it uses as much as digits as its factorization.

7587312643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 46.

The square root of 7587312643 is about 87105.1814934106. The cubic root of 7587312643 is about 1965.0004763599. Note that the first 3 decimals are identical.

The spelling of 7587312643 in words is "seven billion, five hundred eighty-seven million, three hundred twelve thousand, six hundred forty-three".