55215110616311 has 4 divisors (see below), whose sum is σ = 55215205356912. Its totient is φ = 55215015875712.

The previous prime is 55215110616277. The next prime is 55215110616331. The reversal of 55215110616311 is 11361601151255.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55215110616311 - 2⁶ = 55215110616247 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 (55215110616331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46490651 + ... + 47663516.

It is an arithmetic number, because the mean of its divisors is an integer number (13803801339228).

Almost surely, 2^{55215110616311} is an apocalyptic number.

55215110616311 is a deficient number, since it is larger than the sum of its proper divisors (94740601).

55215110616311 is an equidigital number, since it uses as much as digits as its factorization.

55215110616311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94740600.

The product of its (nonzero) digits is 27000, while the sum is 38.

Adding to 55215110616311 its reverse (11361601151255), we get a palindrome (66576711767566).

The spelling of 55215110616311 in words is "fifty-five trillion, two hundred fifteen billion, one hundred ten million, six hundred sixteen thousand, three hundred eleven".