201245548816 has 45 divisors (see below), whose sum is σ = 422262703461. Its totient is φ = 92871794496.

The previous prime is 201245548793. The next prime is 201245548877. The reversal of 201245548816 is 618845542102.

The square root of 201245548816 is 448604.

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

It can be written as a sum of positive squares in only one way, i.e., 29770051600 + 171475497216 = 172540^2 + 414096^2 .

It is a Duffinian number.

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, 23323095 + ... + 23331721.

Almost surely, 2^201245548816 is an apocalyptic number.

201245548816 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

201245548816 is the 448604-th square number.

It is an amenable number.

201245548816 is an abundant number, since it is smaller than the sum of its proper divisors (221017154645).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201245548816 is an frugal number, since it uses more digits than its factorization.

201245548816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17288 (or 8642 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 46.

The spelling of 201245548816 in words is "two hundred one billion, two hundred forty-five million, five hundred forty-eight thousand, eight hundred sixteen".