52656782072789 has 2 divisors, whose sum is σ = 52656782072790. Its totient is φ = 52656782072788.

The previous prime is 52656782072767. The next prime is 52656782072803. The reversal of 52656782072789 is 98727028765625.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35481476696689 + 17175305376100 = 5956633^2 + 4144310^2 .

It is a cyclic number.

It is not a de Polignac number, because 52656782072789 - 2¹⁶ = 52656782007253 is a prime.

It is a super-2 number, since 2×52656782072789² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52656782072729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26328391036394 + 26328391036395.

It is an arithmetic number, because the mean of its divisors is an integer number (26328391036395).

Almost surely, 2^{52656782072789} is an apocalyptic number.

It is an amenable number.

52656782072789 is a deficient number, since it is larger than the sum of its proper divisors (1).

52656782072789 is an equidigital number, since it uses as much as digits as its factorization.

52656782072789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1422489600, while the sum is 74.

The spelling of 52656782072789 in words is "fifty-two trillion, six hundred fifty-six billion, seven hundred eighty-two million, seventy-two thousand, seven hundred eighty-nine".