6556011555651 has 12 divisors (see below), whose sum is σ = 8764847379288. Its totient is φ = 4358956467264.

The previous prime is 6556011555641. The next prime is 6556011555677. The reversal of 6556011555651 is 1565551106556.

It is not a de Polignac number, because 6556011555651 - 2⁵ = 6556011555619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6556011555594 and 6556011555603.

It is not an unprimeable number, because it can be changed into a prime (6556011555631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7436250 + ... + 8271023.

It is an arithmetic number, because the mean of its divisors is an integer number (730403948274).

Almost surely, 2^{6556011555651} is an apocalyptic number.

6556011555651 is a deficient number, since it is larger than the sum of its proper divisors (2208835823637).

6556011555651 is an equidigital number, since it uses as much as digits as its factorization.

6556011555651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15708022 (or 15707649 counting only the distinct ones).

The product of its (nonzero) digits is 3375000, while the sum is 51.

The spelling of 6556011555651 in words is "six trillion, five hundred fifty-six billion, eleven million, five hundred fifty-five thousand, six hundred fifty-one".