245085800961 has 4 divisors (see below), whose sum is σ = 326781067952. Its totient is φ = 163390533972.

The previous prime is 245085800951. The next prime is 245085800963. The reversal of 245085800961 is 169008580542.

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 de Polignac number, because none of the positive numbers 2^k-245085800961 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 245085800961.

It is not an unprimeable number, because it can be changed into a prime (245085800963) 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, 40847633491 + ... + 40847633496.

It is an arithmetic number, because the mean of its divisors is an integer number (81695266988).

Almost surely, 2^245085800961 is an apocalyptic number.

It is an amenable number.

245085800961 is a deficient number, since it is larger than the sum of its proper divisors (81695266991).

245085800961 is an equidigital number, since it uses as much as digits as its factorization.

245085800961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81695266990.

The product of its (nonzero) digits is 691200, while the sum is 48.

The spelling of 245085800961 in words is "two hundred forty-five billion, eighty-five million, eight hundred thousand, nine hundred sixty-one".