245360724920 has 64 divisors (see below), whose sum is σ = 562620971520. Its totient is φ = 96268017664.

The previous prime is 245360724887. The next prime is 245360724943. The reversal of 245360724920 is 29427063542.

It is a Cunningham number, because it is equal to 495339²-1.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 9894377 + ... + 9919143.

It is an arithmetic number, because the mean of its divisors is an integer number (8790952680).

Almost surely, 2^245360724920 is an apocalyptic number.

245360724920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245360724920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281310485760).

245360724920 is an abundant number, since it is smaller than the sum of its proper divisors (317260246600).

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

245360724920 is a wasteful number, since it uses less digits than its factorization.

245360724920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29504 (or 29500 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 44.

The spelling of 245360724920 in words is "two hundred forty-five billion, three hundred sixty million, seven hundred twenty-four thousand, nine hundred twenty".