245022222043521 has 80 divisors (see below), whose sum is σ = 418903235106048. Its totient is φ = 141389654976000.

The previous prime is 245022222043507. The next prime is 245022222043523. The reversal of 245022222043521 is 125340222220542.

245022222043521 is a `hidden beast` number, since 2 + 4 + 50 + 2 + 2 + 22 + 20 + 43 + 521 = 666.

It is not a de Polignac number, because 245022222043521 - 2¹³ = 245022222035329 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (245022222043523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 20402755 + ... + 30105096.

Almost surely, 2^{245022222043521} is an apocalyptic number.

It is an amenable number.

245022222043521 is a deficient number, since it is larger than the sum of its proper divisors (173881013062527).

245022222043521 is a wasteful number, since it uses less digits than its factorization.

245022222043521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50508164 (or 50508155 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 36.

The spelling of 245022222043521 in words is "two hundred forty-five trillion, twenty-two billion, two hundred twenty-two million, forty-three thousand, five hundred twenty-one".