245323323222520 has 128 divisors (see below), whose sum is σ = 562631754888000. Its totient is φ = 96244665753600.

The previous prime is 245323323222491. The next prime is 245323323222521. The reversal of 245323323222520 is 25222323323542.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245323323222521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2156119872 + ... + 2156233648.

Almost surely, 2^{245323323222520} is an apocalyptic number.

245323323222520 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 245323323222520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281315877444000).

245323323222520 is an abundant number, since it is smaller than the sum of its proper divisors (317308431665480).

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

245323323222520 is a wasteful number, since it uses less digits than its factorization.

245323323222520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116369 (or 116365 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 40.

The spelling of 245323323222520 in words is "two hundred forty-five trillion, three hundred twenty-three billion, three hundred twenty-three million, two hundred twenty-two thousand, five hundred twenty".