245052720784 has 15 divisors (see below), whose sum is σ = 474793483017. Its totient is φ = 122525370336.

The previous prime is 245052720779. The next prime is 245052720797. The reversal of 245052720784 is 487027250542.

The square root of 245052720784 is 495028.

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., 180064435600 + 64988285184 = 424340^2 + 254928^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1918234 + ... + 2041990.

Almost surely, 2^245052720784 is an apocalyptic number.

245052720784 is the 495028-th square number.

It is an amenable number.

245052720784 is a deficient number, since it is larger than the sum of its proper divisors (229740762233).

245052720784 is an frugal number, since it uses more digits than its factorization.

245052720784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247522 (or 123759 counting only the distinct ones).

The product of its (nonzero) digits is 1254400, while the sum is 46.

The spelling of 245052720784 in words is "two hundred forty-five billion, fifty-two million, seven hundred twenty thousand, seven hundred eighty-four".