52320211645 has 16 divisors (see below), whose sum is σ = 67651505712. Its totient is φ = 38614924800.

The previous prime is 52320211639. The next prime is 52320211649. The reversal of 52320211645 is 54611202325.

52320211645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 28836794596 + 23483417049 = 169814^2 + 153243^2 .

It is not a de Polignac number, because 52320211645 - 2⁵ = 52320211613 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 (52320211649) 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, 106402 + ... + 340531.

It is an arithmetic number, because the mean of its divisors is an integer number (4228219107).

Almost surely, 2^52320211645 is an apocalyptic number.

It is an amenable number.

52320211645 is a deficient number, since it is larger than the sum of its proper divisors (15331294067).

52320211645 is a wasteful number, since it uses less digits than its factorization.

52320211645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448752.

The product of its (nonzero) digits is 14400, while the sum is 31.

The spelling of 52320211645 in words is "fifty-two billion, three hundred twenty million, two hundred eleven thousand, six hundred forty-five".