78783755053 has 2 divisors, whose sum is σ = 78783755054. Its totient is φ = 78783755052.

The previous prime is 78783755051. The next prime is 78783755081. The reversal of 78783755053 is 35055738787.

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., 72685238404 + 6098516649 = 269602^2 + 78093^2 .

It is a cyclic number.

It is not a de Polignac number, because 78783755053 - 2¹ = 78783755051 is a prime.

It is a super-2 number, since 2×78783755053² (a number of 23 digits) contains 22 as substring.

Together with 78783755051, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78783755051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39391877526 + 39391877527.

It is an arithmetic number, because the mean of its divisors is an integer number (39391877527).

Almost surely, 2^78783755053 is an apocalyptic number.

It is an amenable number.

78783755053 is a deficient number, since it is larger than the sum of its proper divisors (1).

78783755053 is an equidigital number, since it uses as much as digits as its factorization.

78783755053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24696000, while the sum is 58.

The spelling of 78783755053 in words is "seventy-eight billion, seven hundred eighty-three million, seven hundred fifty-five thousand, fifty-three".