1002565643524 has 27 divisors (see below), whose sum is σ = 1834172924647. Its totient is φ = 479465888264.

The previous prime is 1002565643509. The next prime is 1002565643539. The reversal of 1002565643524 is 4253465652001.

The square root of 1002565643524 is 1001282.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (1002565643509) and next prime (1002565643539).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 46048089 + ... + 46069855.

Almost surely, 2^{1002565643524} is an apocalyptic number.

1002565643524 is the 1001282-nd square number.

It is an amenable number.

1002565643524 is a deficient number, since it is larger than the sum of its proper divisors (831607281123).

1002565643524 is an frugal number, since it uses more digits than its factorization.

1002565643524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43584 (or 21792 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 43.

It can be divided in two parts, 1002565 and 643524, that added together give a square (1646089 = 1283²).

The spelling of 1002565643524 in words is "one trillion, two billion, five hundred sixty-five million, six hundred forty-three thousand, five hundred twenty-four".