52661645233573 has 16 divisors (see below), whose sum is σ = 56427963351984. Its totient is φ = 48971313561600.

The previous prime is 52661645233543. The next prime is 52661645233583. The reversal of 52661645233573 is 37533254616625.

It can be written as a sum of positive squares in 8 ways, for example, as 1529520880644 + 51132124352929 = 1236738^2 + 7150673^2 .

It is a cyclic number.

It is not a de Polignac number, because 52661645233573 - 2⁹ = 52661645233061 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 (52661645233543) 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, 25577590 + ... + 27559687.

It is an arithmetic number, because the mean of its divisors is an integer number (3526747709499).

Almost surely, 2^{52661645233573} is an apocalyptic number.

It is an amenable number.

52661645233573 is a deficient number, since it is larger than the sum of its proper divisors (3766318118411).

52661645233573 is a wasteful number, since it uses less digits than its factorization.

52661645233573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53137992.

The product of its digits is 81648000, while the sum is 58.

The spelling of 52661645233573 in words is "fifty-two trillion, six hundred sixty-one billion, six hundred forty-five million, two hundred thirty-three thousand, five hundred seventy-three".