52139216120869 has 2 divisors, whose sum is σ = 52139216120870. Its totient is φ = 52139216120868.

The previous prime is 52139216120839. The next prime is 52139216120923. The reversal of 52139216120869 is 96802161293125.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51616034424900 + 523181695969 = 7184430^2 + 723313^2 .

It is a cyclic number.

It is not a de Polignac number, because 52139216120869 - 2²⁵ = 52139182566437 is a prime.

It is a super-2 number, since 2×52139216120869² (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 (52139216120839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26069608060434 + 26069608060435.

It is an arithmetic number, because the mean of its divisors is an integer number (26069608060435).

Almost surely, 2^{52139216120869} is an apocalyptic number.

It is an amenable number.

52139216120869 is a deficient number, since it is larger than the sum of its proper divisors (1).

52139216120869 is an equidigital number, since it uses as much as digits as its factorization.

52139216120869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2799360, while the sum is 55.

The spelling of 52139216120869 in words is "fifty-two trillion, one hundred thirty-nine billion, two hundred sixteen million, one hundred twenty thousand, eight hundred sixty-nine".