52073539649 has 2 divisors, whose sum is σ = 52073539650. Its totient is φ = 52073539648.

The previous prime is 52073539633. The next prime is 52073539673. The reversal of 52073539649 is 94693537025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47112873025 + 4960666624 = 217055^2 + 70432^2 .

It is a cyclic number.

It is not a de Polignac number, because 52073539649 - 2⁴ = 52073539633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 52073539649.

It is not a weakly prime, because it can be changed into another prime (52073539619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26036769824 + 26036769825.

It is an arithmetic number, because the mean of its divisors is an integer number (26036769825).

Almost surely, 2^52073539649 is an apocalyptic number.

It is an amenable number.

52073539649 is a deficient number, since it is larger than the sum of its proper divisors (1).

52073539649 is an equidigital number, since it uses as much as digits as its factorization.

52073539649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6123600, while the sum is 53.

The spelling of 52073539649 in words is "fifty-two billion, seventy-three million, five hundred thirty-nine thousand, six hundred forty-nine".