245102105820 has 192 divisors, whose sum is σ = 819933166080. Its totient is φ = 53918284800.

The previous prime is 245102105813. The next prime is 245102105873. The reversal of 245102105820 is 28501201542.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 264130 + ... + 748310.

It is an arithmetic number, because the mean of its divisors is an integer number (4270485240).

Almost surely, 2^245102105820 is an apocalyptic number.

245102105820 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 245102105820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (409966583040).

245102105820 is an abundant number, since it is smaller than the sum of its proper divisors (574831060260).

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

245102105820 is a wasteful number, since it uses less digits than its factorization.

245102105820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484276 (or 484274 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 30.

The spelling of 245102105820 in words is "two hundred forty-five billion, one hundred two million, one hundred five thousand, eight hundred twenty".