6503362561 has 16 divisors (see below), whose sum is σ = 6665198400. Its totient is φ = 6343560000.

The previous prime is 6503362517. The next prime is 6503362573. The reversal of 6503362561 is 1652633056.

It is a cyclic number.

It is not a de Polignac number, because 6503362561 - 2⁹ = 6503362049 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 6503362561.

It is not an unprimeable number, because it can be changed into a prime (6503362501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4117870 + ... + 4119448.

It is an arithmetic number, because the mean of its divisors is an integer number (416574900).

Almost surely, 2^6503362561 is an apocalyptic number.

6503362561 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

6503362561 is a deficient number, since it is larger than the sum of its proper divisors (161835839).

6503362561 is a wasteful number, since it uses less digits than its factorization.

6503362561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2160.

The product of its (nonzero) digits is 97200, while the sum is 37.

The square root of 6503362561 is about 80643.4285047455. The cubic root of 6503362561 is about 1866.5773382246.

The spelling of 6503362561 in words is "six billion, five hundred three million, three hundred sixty-two thousand, five hundred sixty-one".