245447453506 has 8 divisors (see below), whose sum is σ = 374206773564. Its totient is φ = 120711862320.

The previous prime is 245447453491. The next prime is 245447453509. The reversal of 245447453506 is 605354744542.

It can be written as a sum of positive squares in 2 ways, for example, as 177922832481 + 67524621025 = 421809^2 + 259855^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 245447453506.

It is not an unprimeable number, because it can be changed into a prime (245447453509) 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, 1005932065 + ... + 1005932308.

Almost surely, 2^245447453506 is an apocalyptic number.

245447453506 is a deficient number, since it is larger than the sum of its proper divisors (128759320058).

245447453506 is a wasteful number, since it uses less digits than its factorization.

245447453506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011864436.

The product of its (nonzero) digits is 8064000, while the sum is 49.

The spelling of 245447453506 in words is "two hundred forty-five billion, four hundred forty-seven million, four hundred fifty-three thousand, five hundred six".