6551541515 has 8 divisors (see below), whose sum is σ = 8324311680. Its totient is φ = 4932925312.

The previous prime is 6551541511. The next prime is 6551541553. The reversal of 6551541515 is 5151451556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6551541515 - 2² = 6551541511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6551541511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38538395 + ... + 38538564.

It is an arithmetic number, because the mean of its divisors is an integer number (1040538960).

Almost surely, 2^6551541515 is an apocalyptic number.

6551541515 is a deficient number, since it is larger than the sum of its proper divisors (1772770165).

6551541515 is a wasteful number, since it uses less digits than its factorization.

6551541515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77076981.

The product of its digits is 75000, while the sum is 38.

The square root of 6551541515 is about 80941.5932324043. The cubic root of 6551541515 is about 1871.1753994303.

The spelling of 6551541515 in words is "six billion, five hundred fifty-one million, five hundred forty-one thousand, five hundred fifteen".