6615257000561 has 8 divisors (see below), whose sum is σ = 7392659708448. Its totient is φ = 5867190244000.

The previous prime is 6615257000551. The next prime is 6615257000587. The reversal of 6615257000561 is 1650007525166.

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 6615257000561 - 2⁶ = 6615257000497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6615257000551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7333987355 + ... + 7333988256.

It is an arithmetic number, because the mean of its divisors is an integer number (924082463556).

Almost surely, 2^{6615257000561} is an apocalyptic number.

It is an amenable number.

6615257000561 is a deficient number, since it is larger than the sum of its proper divisors (777402707887).

6615257000561 is a wasteful number, since it uses less digits than its factorization.

6615257000561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14667975663.

The product of its (nonzero) digits is 378000, while the sum is 44.

The spelling of 6615257000561 in words is "six trillion, six hundred fifteen billion, two hundred fifty-seven million, five hundred sixty-one", and thus it is an aban number.