52640060749 has 2 divisors, whose sum is σ = 52640060750. Its totient is φ = 52640060748.

The previous prime is 52640060743. The next prime is 52640060789. The reversal of 52640060749 is 94706004625.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36512330724 + 16127730025 = 191082^2 + 126995^2 .

It is a cyclic number.

It is not a de Polignac number, because 52640060749 - 2¹³ = 52640052557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52640060743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26320030374 + 26320030375.

It is an arithmetic number, because the mean of its divisors is an integer number (26320030375).

Almost surely, 2^52640060749 is an apocalyptic number.

It is an amenable number.

52640060749 is a deficient number, since it is larger than the sum of its proper divisors (1).

52640060749 is an equidigital number, since it uses as much as digits as its factorization.

52640060749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 52640060749 in words is "fifty-two billion, six hundred forty million, sixty thousand, seven hundred forty-nine".