245621342404 has 27 divisors (see below), whose sum is σ = 431629693327. Its totient is φ = 122300696744.

The previous prime is 245621342389. The next prime is 245621342411. The reversal of 245621342404 is 404243126542.

The square root of 245621342404 is 495602.

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 (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 379630809 + ... + 379631455.

Almost surely, 2^245621342404 is an apocalyptic number.

245621342404 is the 495602-nd square number.

It is an amenable number.

245621342404 is a deficient number, since it is larger than the sum of its proper divisors (186008350923).

245621342404 is an frugal number, since it uses more digits than its factorization.

245621342404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2064 (or 1032 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 37.

Adding to 245621342404 its reverse (404243126542), we get a palindrome (649864468946).

The spelling of 245621342404 in words is "two hundred forty-five billion, six hundred twenty-one million, three hundred forty-two thousand, four hundred four".