215205550345201 has 16 divisors (see below), whose sum is σ = 241842742767360. Its totient is φ = 190009232487360.

The previous prime is 215205550345111. The next prime is 215205550345207. The reversal of 215205550345201 is 102543055502512.

It is not a de Polignac number, because 215205550345201 - 2¹⁵ = 215205550312433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215205550345207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1798755 + ... + 20824183.

It is an arithmetic number, because the mean of its divisors is an integer number (15115171422960).

Almost surely, 2^{215205550345201} is an apocalyptic number.

It is an amenable number.

215205550345201 is a deficient number, since it is larger than the sum of its proper divisors (26637192422159).

215205550345201 is a wasteful number, since it uses less digits than its factorization.

215205550345201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19063296.

The product of its (nonzero) digits is 300000, while the sum is 40.

The spelling of 215205550345201 in words is "two hundred fifteen trillion, two hundred five billion, five hundred fifty million, three hundred forty-five thousand, two hundred one".