245853606401 has 4 divisors (see below), whose sum is σ = 264765422292. Its totient is φ = 226941790512.

The previous prime is 245853606391. The next prime is 245853606403. The reversal of 245853606401 is 104606358542.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 79312077376 + 166541529025 = 281624^2 + 408095^2 .

It is a cyclic number.

It is not a de Polignac number, because 245853606401 - 2²² = 245849412097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245853606403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9455907926 + ... + 9455907951.

It is an arithmetic number, because the mean of its divisors is an integer number (66191355573).

Almost surely, 2^245853606401 is an apocalyptic number.

It is an amenable number.

245853606401 is a deficient number, since it is larger than the sum of its proper divisors (18911815891).

245853606401 is a wasteful number, since it uses less digits than its factorization.

245853606401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18911815890.

The product of its (nonzero) digits is 691200, while the sum is 44.

The spelling of 245853606401 in words is "two hundred forty-five billion, eight hundred fifty-three million, six hundred six thousand, four hundred one".