52445981969 has 2 divisors, whose sum is σ = 52445981970. Its totient is φ = 52445981968.

The previous prime is 52445981947. The next prime is 52445982053. The reversal of 52445981969 is 96918954425.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35203140625 + 17242841344 = 187625^2 + 131312^2 .

It is a cyclic number.

It is not a de Polignac number, because 52445981969 - 2²⁴ = 52429204753 is a prime.

It is a super-2 number, since 2×52445981969² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (52445981069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26222990984 + 26222990985.

It is an arithmetic number, because the mean of its divisors is an integer number (26222990985).

Almost surely, 2^52445981969 is an apocalyptic number.

It is an amenable number.

52445981969 is a deficient number, since it is larger than the sum of its proper divisors (1).

52445981969 is an equidigital number, since it uses as much as digits as its factorization.

52445981969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27993600, while the sum is 62.

The spelling of 52445981969 in words is "fifty-two billion, four hundred forty-five million, nine hundred eighty-one thousand, nine hundred sixty-nine".