6566711257455 has 8 divisors (see below), whose sum is σ = 10506738011952. Its totient is φ = 3502246003968.

The previous prime is 6566711257451. The next prime is 6566711257529. The reversal of 6566711257455 is 5547521176656.

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

It is not a de Polignac number, because 6566711257455 - 2² = 6566711257451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6566711257451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218890375234 + ... + 218890375263.

It is an arithmetic number, because the mean of its divisors is an integer number (1313342251494).

Almost surely, 2^{6566711257455} is an apocalyptic number.

6566711257455 is a deficient number, since it is larger than the sum of its proper divisors (3940026754497).

6566711257455 is a wasteful number, since it uses less digits than its factorization.

6566711257455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437780750505.

The product of its digits is 52920000, while the sum is 60.

The spelling of 6566711257455 in words is "six trillion, five hundred sixty-six billion, seven hundred eleven million, two hundred fifty-seven thousand, four hundred fifty-five".