245241512520 has 128 divisors (see below), whose sum is σ = 761414256000. Its totient is φ = 63116103680.

The previous prime is 245241512501. The next prime is 245241512533. The reversal of 245241512520 is 25215142542.

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 31 ways as a sum of consecutive naturals, for example, 9065815 + ... + 9092825.

It is an arithmetic number, because the mean of its divisors is an integer number (5948548875).

Almost surely, 2^245241512520 is an apocalyptic number.

245241512520 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 245241512520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (380707128000).

245241512520 is an abundant number, since it is smaller than the sum of its proper divisors (516172743480).

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

245241512520 is a wasteful number, since it uses less digits than its factorization.

245241512520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29663 (or 29659 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 33.

The spelling of 245241512520 in words is "two hundred forty-five billion, two hundred forty-one million, five hundred twelve thousand, five hundred twenty".