245345242055540 has 96 divisors (see below), whose sum is σ = 563505636443904. Its totient is φ = 88987585167360.

The previous prime is 245345242055449. The next prime is 245345242055591. The reversal of 245345242055540 is 45550242543542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2369220404 + ... + 2369323956.

It is an arithmetic number, because the mean of its divisors is an integer number (5869850379624).

Almost surely, 2^{245345242055540} is an apocalyptic number.

245345242055540 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 245345242055540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281752818221952).

245345242055540 is an abundant number, since it is smaller than the sum of its proper divisors (318160394388364).

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

245345242055540 is a wasteful number, since it uses less digits than its factorization.

245345242055540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131097 (or 131095 counting only the distinct ones).

The product of its (nonzero) digits is 19200000, while the sum is 50.

The spelling of 245345242055540 in words is "two hundred forty-five trillion, three hundred forty-five billion, two hundred forty-two million, fifty-five thousand, five hundred forty".