245153664561 has 16 divisors (see below), whose sum is σ = 352138889984. Its totient is φ = 150810920064.

The previous prime is 245153664541. The next prime is 245153664571. The reversal of 245153664561 is 165466351542.

It is a happy number.

It is not a de Polignac number, because 245153664561 - 2⁷ = 245153664433 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 245153664561.

It is not an unprimeable number, because it can be changed into a prime (245153664541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 988681 + ... + 1211526.

It is an arithmetic number, because the mean of its divisors is an integer number (22008680624).

Almost surely, 2^245153664561 is an apocalyptic number.

It is an amenable number.

245153664561 is a deficient number, since it is larger than the sum of its proper divisors (106985225423).

245153664561 is a wasteful number, since it uses less digits than its factorization.

245153664561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2203080.

The product of its digits is 2592000, while the sum is 48.

The spelling of 245153664561 in words is "two hundred forty-five billion, one hundred fifty-three million, six hundred sixty-four thousand, five hundred sixty-one".