6557120615 has 8 divisors (see below), whose sum is σ = 7874985888. Its totient is φ = 5241402400.

The previous prime is 6557120569. The next prime is 6557120639. The reversal of 6557120615 is 5160217556.

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

It is not a de Polignac number, because 6557120615 - 2⁶ = 6557120551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 530036 + ... + 542265.

It is an arithmetic number, because the mean of its divisors is an integer number (984373236).

Almost surely, 2^6557120615 is an apocalyptic number.

6557120615 is a deficient number, since it is larger than the sum of its proper divisors (1317865273).

6557120615 is a wasteful number, since it uses less digits than its factorization.

6557120615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073529.

The product of its (nonzero) digits is 63000, while the sum is 38.

The square root of 6557120615 is about 80976.0496381492. The cubic root of 6557120615 is about 1871.7063947048.

The spelling of 6557120615 in words is "six billion, five hundred fifty-seven million, one hundred twenty thousand, six hundred fifteen".