6543552015 has 96 divisors (see below), whose sum is σ = 15228734976. Its totient is φ = 2510196480.

The previous prime is 6543552011. The next prime is 6543552023. The reversal of 6543552015 is 5102553456.

6543552015 is a `hidden beast` number, since 65 + 43 + 552 + 0 + 1 + 5 = 666.

It is not a de Polignac number, because 6543552015 - 2² = 6543552011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6543552011) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 27589 + ... + 117678.

It is an arithmetic number, because the mean of its divisors is an integer number (158632656).

Almost surely, 2^6543552015 is an apocalyptic number.

6543552015 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6543552015 is an abundant number, since it is smaller than the sum of its proper divisors (8685182961).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6543552015 is a wasteful number, since it uses less digits than its factorization.

6543552015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145309 (or 145306 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The square root of 6543552015 is about 80892.2246881615. The cubic root of 6543552015 is about 1870.4144672163.

The spelling of 6543552015 in words is "six billion, five hundred forty-three million, five hundred fifty-two thousand, fifteen".