245123790240 has 384 divisors, whose sum is σ = 912647651328. Its totient is φ = 54117642240.

The previous prime is 245123790229. The next prime is 245123790253. The reversal of 245123790240 is 42097321542.

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, 63223182 + ... + 63227058.

It is an arithmetic number, because the mean of its divisors is an integer number (2376686592).

Almost surely, 2^245123790240 is an apocalyptic number.

245123790240 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 245123790240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (456323825664).

245123790240 is an abundant number, since it is smaller than the sum of its proper divisors (667523861088).

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

245123790240 is a wasteful number, since it uses less digits than its factorization.

245123790240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4540 (or 4532 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 245123790240 in words is "two hundred forty-five billion, one hundred twenty-three million, seven hundred ninety thousand, two hundred forty".