245485643321 has 4 divisors (see below), whose sum is σ = 245501327952. Its totient is φ = 245469958692.

The previous prime is 245485643311. The next prime is 245485643339. The reversal of 245485643321 is 123346584542.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 245485643321 - 2⁶ = 245485643257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245485643311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7818815 + ... + 7850148.

It is an arithmetic number, because the mean of its divisors is an integer number (61375331988).

Almost surely, 2^245485643321 is an apocalyptic number.

It is an amenable number.

245485643321 is a deficient number, since it is larger than the sum of its proper divisors (15684631).

245485643321 is a wasteful number, since it uses less digits than its factorization.

245485643321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15684630.

The product of its digits is 2764800, while the sum is 47.

The spelling of 245485643321 in words is "two hundred forty-five billion, four hundred eighty-five million, six hundred forty-three thousand, three hundred twenty-one".