2155051120055 has 8 divisors (see below), whose sum is σ = 2698498793952. Its totient is φ = 1649082596128.

The previous prime is 2155051120051. The next prime is 2155051120093. The reversal of 2155051120055 is 5500211505512.

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 2155051120055 - 2² = 2155051120051 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155051120051) 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, 9369787364 + ... + 9369787593.

It is an arithmetic number, because the mean of its divisors is an integer number (337312349244).

Almost surely, 2^{2155051120055} is an apocalyptic number.

2155051120055 is a deficient number, since it is larger than the sum of its proper divisors (543447673897).

2155051120055 is a wasteful number, since it uses less digits than its factorization.

2155051120055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18739574985.

The product of its (nonzero) digits is 12500, while the sum is 32.

Adding to 2155051120055 its reverse (5500211505512), we get a palindrome (7655262625567).

The spelling of 2155051120055 in words is "two trillion, one hundred fifty-five billion, fifty-one million, one hundred twenty thousand, fifty-five".