245041153533221 has 8 divisors (see below), whose sum is σ = 247317685405560. Its totient is φ = 242765138895552.

The previous prime is 245041153533217. The next prime is 245041153533271. The reversal of 245041153533221 is 122335351140542.

It can be written as a sum of positive squares in 4 ways, for example, as 718807230625 + 244322346302596 = 847825^2 + 15630814^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 245041153533221 - 2² = 245041153533217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245041153533271) 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, 128356730 + ... + 130251803.

It is an arithmetic number, because the mean of its divisors is an integer number (30914710675695).

Almost surely, 2^{245041153533221} is an apocalyptic number.

It is an amenable number.

245041153533221 is a deficient number, since it is larger than the sum of its proper divisors (2276531872339).

245041153533221 is a wasteful number, since it uses less digits than its factorization.

245041153533221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258617335.

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 245041153533221 in words is "two hundred forty-five trillion, forty-one billion, one hundred fifty-three million, five hundred thirty-three thousand, two hundred twenty-one".