6556011662779 has 8 divisors (see below), whose sum is σ = 6608184104448. Its totient is φ = 6503847819840.

The previous prime is 6556011662663. The next prime is 6556011662821. The reversal of 6556011662779 is 9772661106556.

It is a happy number.

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 6556011662779 - 2²⁵ = 6555978108347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6556011665779) 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, 614392 + ... + 3672805.

It is an arithmetic number, because the mean of its divisors is an integer number (826023013056).

Almost surely, 2^{6556011662779} is an apocalyptic number.

6556011662779 is a deficient number, since it is larger than the sum of its proper divisors (52172441669).

6556011662779 is a wasteful number, since it uses less digits than its factorization.

6556011662779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4299365.

The product of its (nonzero) digits is 28576800, while the sum is 61.

The spelling of 6556011662779 in words is "six trillion, five hundred fifty-six billion, eleven million, six hundred sixty-two thousand, seven hundred seventy-nine".