3573824517221 has 6 divisors (see below), whose sum is σ = 4157306071110. Its totient is φ = 3063278157576.

The previous prime is 3573824517173. The next prime is 3573824517247. The reversal of 3573824517221 is 1227154283753.

It can be written as a sum of positive squares in only one way, i.e., 3532572876196 + 41251641025 = 1879514^2 + 203105^2 .

It is not a de Polignac number, because 3573824517221 - 2³⁸ = 3298946610277 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3573824517221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3573854517221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36467597066 + ... + 36467597163.

It is an arithmetic number, because the mean of its divisors is an integer number (692884345185).

Almost surely, 2^{3573824517221} is an apocalyptic number.

It is an amenable number.

3573824517221 is a deficient number, since it is larger than the sum of its proper divisors (583481553889).

3573824517221 is an equidigital number, since it uses as much as digits as its factorization.

3573824517221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72935194243 (or 72935194236 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 50.

The spelling of 3573824517221 in words is "three trillion, five hundred seventy-three billion, eight hundred twenty-four million, five hundred seventeen thousand, two hundred twenty-one".