245740517712 has 100 divisors (see below), whose sum is σ = 712888577940. Its totient is φ = 81724142592.

The previous prime is 245740517699. The next prime is 245740517773. The reversal of 245740517712 is 217715047542.

It is a happy number.

245740517712 is a `hidden beast` number, since 2 + 4 + 574 + 0 + 5 + 1 + 7 + 71 + 2 = 666.

245740517712 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 14902549776 + 230837967936 = 122076^2 + 480456^2 .

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 19 ways as a sum of consecutive naturals, for example, 342214 + ... + 780122.

Almost surely, 2^245740517712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245740517712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (356444288970).

245740517712 is an abundant number, since it is smaller than the sum of its proper divisors (467148060228).

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

245740517712 is a wasteful number, since it uses less digits than its factorization.

245740517712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438362 (or 438347 counting only the distinct ones).

The product of its (nonzero) digits is 548800, while the sum is 45.

The spelling of 245740517712 in words is "two hundred forty-five billion, seven hundred forty million, five hundred seventeen thousand, seven hundred twelve".