245209254990 has 48 divisors (see below), whose sum is σ = 684584209872. Its totient is φ = 56047829376.

The previous prime is 245209254973. The next prime is 245209255007. The reversal of 245209254990 is 99452902542.

245209254990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (245209254973) and next prime (245209255007).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83403039 + ... + 83405978.

It is an arithmetic number, because the mean of its divisors is an integer number (14262171039).

Almost surely, 2^245209254990 is an apocalyptic number.

245209254990 is an abundant number, since it is smaller than the sum of its proper divisors (439374954882).

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

245209254990 is a wasteful number, since it uses less digits than its factorization.

245209254990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166809041 (or 166809034 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 51.

The spelling of 245209254990 in words is "two hundred forty-five billion, two hundred nine million, two hundred fifty-four thousand, nine hundred ninety".