55135523215 has 16 divisors (see below), whose sum is σ = 69258848256. Its totient is φ = 42084352800.

The previous prime is 55135523213. The next prime is 55135523221. The reversal of 55135523215 is 51232553155.

It is not a de Polignac number, because 55135523215 - 2¹ = 55135523213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55135523213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2494017 + ... + 2516026.

It is an arithmetic number, because the mean of its divisors is an integer number (4328678016).

Almost surely, 2^55135523215 is an apocalyptic number.

55135523215 is a deficient number, since it is larger than the sum of its proper divisors (14123325041).

55135523215 is a wasteful number, since it uses less digits than its factorization.

55135523215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5010150.

The product of its digits is 112500, while the sum is 37.

It can be divided in two parts, 55135 and 523215, that added together give a triangular number (578350 = T₁₀₇₅).

The spelling of 55135523215 in words is "fifty-five billion, one hundred thirty-five million, five hundred twenty-three thousand, two hundred fifteen".