6550111550155 has 8 divisors (see below), whose sum is σ = 8042927671152. Its totient is φ = 5118226699488.

The previous prime is 6550111550153. The next prime is 6550111550159. The reversal of 6550111550155 is 5510551110556.

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 6550111550155 - 2¹ = 6550111550153 is a prime.

It is a super-2 number, since 2×6550111550155² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6550111550153) 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, 15232817344 + ... + 15232817773.

It is an arithmetic number, because the mean of its divisors is an integer number (1005365958894).

Almost surely, 2^{6550111550155} is an apocalyptic number.

6550111550155 is a deficient number, since it is larger than the sum of its proper divisors (1492816120997).

6550111550155 is a wasteful number, since it uses less digits than its factorization.

6550111550155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30465635165.

The product of its (nonzero) digits is 93750, while the sum is 40.

The spelling of 6550111550155 in words is "six trillion, five hundred fifty billion, one hundred eleven million, five hundred fifty thousand, one hundred fifty-five".