245373026645 has 4 divisors (see below), whose sum is σ = 294447631980. Its totient is φ = 196298421312.

The previous prime is 245373026627. The next prime is 245373026653. The reversal of 245373026645 is 546620373542.

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 58867375876 + 186505650769 = 242626^2 + 431863^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245373026645 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245373026645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24537302660 + ... + 24537302669.

It is an arithmetic number, because the mean of its divisors is an integer number (73611907995).

Almost surely, 2^245373026645 is an apocalyptic number.

It is an amenable number.

245373026645 is a deficient number, since it is larger than the sum of its proper divisors (49074605335).

245373026645 is an equidigital number, since it uses as much as digits as its factorization.

245373026645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49074605334.

The product of its (nonzero) digits is 3628800, while the sum is 47.

The spelling of 245373026645 in words is "two hundred forty-five billion, three hundred seventy-three million, twenty-six thousand, six hundred forty-five".