245305523420 has 96 divisors (see below), whose sum is σ = 542898986112. Its totient is φ = 92922052608.

The previous prime is 245305523413. The next prime is 245305523461. The reversal of 245305523420 is 24325503542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59930894 + ... + 59934986.

It is an arithmetic number, because the mean of its divisors is an integer number (5655197772).

Almost surely, 2^245305523420 is an apocalyptic number.

245305523420 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 245305523420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271449493056).

245305523420 is an abundant number, since it is smaller than the sum of its proper divisors (297593462692).

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

245305523420 is a wasteful number, since it uses less digits than its factorization.

245305523420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5391 (or 5389 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 35.

The spelling of 245305523420 in words is "two hundred forty-five billion, three hundred five million, five hundred twenty-three thousand, four hundred twenty".