215500553200001 has 4 divisors (see below), whose sum is σ = 215502379949892. Its totient is φ = 215498726450112.

The previous prime is 215500553199947. The next prime is 215500553200043. The reversal of 215500553200001 is 100002355005512.

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

It can be written as a sum of positive squares in 2 ways, for example, as 28418750693776 + 187081802506225 = 5330924^2 + 13677785^2 .

It is a cyclic number.

It is not a de Polignac number, because 215500553200001 - 2³⁰ = 215499479458177 is a prime.

It is a super-2 number, since 2×215500553200001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215500553200061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 913197980 + ... + 913433933.

It is an arithmetic number, because the mean of its divisors is an integer number (53875594987473).

Almost surely, 2^{215500553200001} is an apocalyptic number.

It is an amenable number.

215500553200001 is a deficient number, since it is larger than the sum of its proper divisors (1826749891).

215500553200001 is a wasteful number, since it uses less digits than its factorization.

215500553200001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1826749890.

The product of its (nonzero) digits is 7500, while the sum is 29.

The spelling of 215500553200001 in words is "two hundred fifteen trillion, five hundred billion, five hundred fifty-three million, two hundred thousand, one".