6555611556155 has 8 divisors (see below), whose sum is σ = 7867974128352. Its totient is φ = 5243662404288.

The previous prime is 6555611556149. The next prime is 6555611556157. The reversal of 6555611556155 is 5516551165556.

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 6555611556155 - 2¹⁶ = 6555611490619 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6555611556155.

It is not an unprimeable number, because it can be changed into a prime (6555611556157) 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, 103320194 + ... + 103383623.

It is an arithmetic number, because the mean of its divisors is an integer number (983496766044).

Almost surely, 2^{6555611556155} is an apocalyptic number.

6555611556155 is a deficient number, since it is larger than the sum of its proper divisors (1312362572197).

6555611556155 is a wasteful number, since it uses less digits than its factorization.

6555611556155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206710165.

The product of its digits is 16875000, while the sum is 56.

The spelling of 6555611556155 in words is "six trillion, five hundred fifty-five billion, six hundred eleven million, five hundred fifty-six thousand, one hundred fifty-five".