219636700945201 has 16 divisors (see below), whose sum is σ = 241304104729296. Its totient is φ = 199056447184896.

The previous prime is 219636700945171. The next prime is 219636700945253. The reversal of 219636700945201 is 102549007636912.

It can be written as a sum of positive squares in 8 ways, for example, as 95105385335601 + 124531315609600 = 9752199^2 + 11159360^2 .

It is a cyclic number.

It is not a de Polignac number, because 219636700945201 - 2³⁷ = 219499261991729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (219636700945601) 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, 1799856226 + ... + 1799978251.

It is an arithmetic number, because the mean of its divisors is an integer number (15081506545581).

Almost surely, 2^{219636700945201} is an apocalyptic number.

It is an amenable number.

219636700945201 is a deficient number, since it is larger than the sum of its proper divisors (21667403784095).

219636700945201 is a wasteful number, since it uses less digits than its factorization.

219636700945201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3599834628.

The product of its (nonzero) digits is 4898880, while the sum is 55.

The spelling of 219636700945201 in words is "two hundred nineteen trillion, six hundred thirty-six billion, seven hundred million, nine hundred forty-five thousand, two hundred one".