201967550464 has 45 divisors (see below), whose sum is σ = 404037851511. Its totient is φ = 100955013120.

The previous prime is 201967550459. The next prime is 201967550503. The reversal of 201967550464 is 464055769102.

The square root of 201967550464 is 449408.

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

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 57522469 + ... + 57525979.

Almost surely, 2^201967550464 is an apocalyptic number.

201967550464 is the 449408-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201967550464

201967550464 is an abundant number, since it is smaller than the sum of its proper divisors (202070301047).

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

201967550464 is an frugal number, since it uses more digits than its factorization.

201967550464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7050 (or 3513 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 49.

Multiplying 201967550464 by its sum of digits (49), we get a square (9896409972736 = 3145856²).

The spelling of 201967550464 in words is "two hundred one billion, nine hundred sixty-seven million, five hundred fifty thousand, four hundred sixty-four".