245442526021 has 16 divisors (see below), whose sum is σ = 311779974528. Its totient is φ = 187645348800.

The previous prime is 245442526013. The next prime is 245442526073. The reversal of 245442526021 is 120625244542.

245442526021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 245442526021 - 2³ = 245442526013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245442526621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30067290 + ... + 30075451.

It is an arithmetic number, because the mean of its divisors is an integer number (19486248408).

Almost surely, 2^245442526021 is an apocalyptic number.

It is an amenable number.

245442526021 is a deficient number, since it is larger than the sum of its proper divisors (66337448507).

245442526021 is a wasteful number, since it uses less digits than its factorization.

245442526021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60142812.

The product of its (nonzero) digits is 153600, while the sum is 37.

The spelling of 245442526021 in words is "two hundred forty-five billion, four hundred forty-two million, five hundred twenty-six thousand, twenty-one".