201581244484 has 27 divisors (see below), whose sum is σ = 365398227831. Its totient is φ = 97302512160.

The previous prime is 201581244463. The next prime is 201581244509. The reversal of 201581244484 is 484442185102.

The square root of 201581244484 is 448978.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 16543618884 + 185037625600 = 128622^2 + 430160^2 .

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 201581244484.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 26036854 + ... + 26044594.

Almost surely, 2^201581244484 is an apocalyptic number.

201581244484 is the 448978-th square number.

It is an amenable number.

201581244484 is a deficient number, since it is larger than the sum of its proper divisors (163816983347).

201581244484 is an frugal number, since it uses more digits than its factorization.

201581244484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15544 (or 7772 counting only the distinct ones).

The product of its (nonzero) digits is 327680, while the sum is 43.

The spelling of 201581244484 in words is "two hundred one billion, five hundred eighty-one million, two hundred forty-four thousand, four hundred eighty-four".