245311340003220 has 192 divisors, whose sum is σ = 700847278903296. Its totient is φ = 64096877859840.

The previous prime is 245311340003209. The next prime is 245311340003227. The reversal of 245311340003220 is 22300043113542.

It is a super-2 number, since 2×245311340003220² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245311340003227) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4213711552 + ... + 4213769768.

It is an arithmetic number, because the mean of its divisors is an integer number (3650246244288).

Almost surely, 2^{245311340003220} is an apocalyptic number.

245311340003220 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 245311340003220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (350423639451648).

245311340003220 is an abundant number, since it is smaller than the sum of its proper divisors (455535938900076).

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

245311340003220 is a wasteful number, since it uses less digits than its factorization.

245311340003220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64390 (or 64388 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 245311340003220 its reverse (22300043113542), we get a palindrome (267611383116762).

The spelling of 245311340003220 in words is "two hundred forty-five trillion, three hundred eleven billion, three hundred forty million, three thousand, two hundred twenty".