245000307561 has 8 divisors (see below), whose sum is σ = 326845493184. Its totient is φ = 163244330160.

The previous prime is 245000307557. The next prime is 245000307571. The reversal of 245000307561 is 165703000542.

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

It is not a de Polignac number, because 245000307561 - 2² = 245000307557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (245000307571) 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, 22295646 + ... + 22306631.

It is an arithmetic number, because the mean of its divisors is an integer number (40855686648).

Almost surely, 2^245000307561 is an apocalyptic number.

It is an amenable number.

245000307561 is a deficient number, since it is larger than the sum of its proper divisors (81845185623).

245000307561 is a wasteful number, since it uses less digits than its factorization.

245000307561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44604111.

The product of its (nonzero) digits is 25200, while the sum is 33.

The spelling of 245000307561 in words is "two hundred forty-five billion, three hundred seven thousand, five hundred sixty-one".