53989752769 has 2 divisors, whose sum is σ = 53989752770. Its totient is φ = 53989752768.

The previous prime is 53989752749. The next prime is 53989752851. The reversal of 53989752769 is 96725798935.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53409521025 + 580231744 = 231105^2 + 24088^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53989752769 is a prime.

It is a super-2 number, since 2×53989752769² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53989752698 and 53989752707.

It is not a weakly prime, because it can be changed into another prime (53989752749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26994876384 + 26994876385.

It is an arithmetic number, because the mean of its divisors is an integer number (26994876385).

Almost surely, 2^53989752769 is an apocalyptic number.

It is an amenable number.

53989752769 is a deficient number, since it is larger than the sum of its proper divisors (1).

53989752769 is an equidigital number, since it uses as much as digits as its factorization.

53989752769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 257191200, while the sum is 70.

The spelling of 53989752769 in words is "fifty-three billion, nine hundred eighty-nine million, seven hundred fifty-two thousand, seven hundred sixty-nine".