6535012663 has 4 divisors (see below), whose sum is σ = 6543808848. Its totient is φ = 6526216480.

The previous prime is 6535012651. The next prime is 6535012667. The reversal of 6535012663 is 3662105356.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6535012663 - 2²¹ = 6532915511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6535012667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4396978 + ... + 4398463.

It is an arithmetic number, because the mean of its divisors is an integer number (1635952212).

Almost surely, 2^6535012663 is an apocalyptic number.

6535012663 is a deficient number, since it is larger than the sum of its proper divisors (8796185).

6535012663 is an equidigital number, since it uses as much as digits as its factorization.

6535012663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8796184.

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

The square root of 6535012663 is about 80839.4251773230. The cubic root of 6535012663 is about 1869.6004811521.

The spelling of 6535012663 in words is "six billion, five hundred thirty-five million, twelve thousand, six hundred sixty-three".