245451661713 has 12 divisors (see below), whose sum is σ = 360353442228. Its totient is φ = 160951908960.

The previous prime is 245451661711. The next prime is 245451661723. The reversal of 245451661713 is 317166154542.

It is a happy number.

245451661713 is a `hidden beast` number, since 2 + 4 + 5 + 4 + 5 + 16 + 617 + 13 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12174253569 + 233277408144 = 110337^2 + 482988^2 .

It is not a de Polignac number, because 245451661713 - 2¹ = 245451661711 is a prime.

It is not an unprimeable number, because it can be changed into a prime (245451661711) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 223543770 + ... + 223544867.

It is an arithmetic number, because the mean of its divisors is an integer number (30029453519).

Almost surely, 2^245451661713 is an apocalyptic number.

It is an amenable number.

245451661713 is a deficient number, since it is larger than the sum of its proper divisors (114901780515).

245451661713 is a wasteful number, since it uses less digits than its factorization.

245451661713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447088704 (or 447088701 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The spelling of 245451661713 in words is "two hundred forty-five billion, four hundred fifty-one million, six hundred sixty-one thousand, seven hundred thirteen".