245645431601 has 8 divisors (see below), whose sum is σ = 249103344840. Its totient is φ = 242210045952.

The previous prime is 245645431589. The next prime is 245645431639. The reversal of 245645431601 is 106134546542.

It can be written as a sum of positive squares in 4 ways, for example, as 1396965376 + 244248466225 = 37376^2 + 494215^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 245645431601 - 2¹⁰ = 245645430577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245645431001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5609936 + ... + 5653553.

It is an arithmetic number, because the mean of its divisors is an integer number (31137918105).

Almost surely, 2^245645431601 is an apocalyptic number.

It is an amenable number.

245645431601 is a deficient number, since it is larger than the sum of its proper divisors (3457913239).

245645431601 is a wasteful number, since it uses less digits than its factorization.

245645431601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11263795.

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 245645431601 in words is "two hundred forty-five billion, six hundred forty-five million, four hundred thirty-one thousand, six hundred one".