118647069781 has 2 divisors, whose sum is σ = 118647069782. Its totient is φ = 118647069780.

The previous prime is 118647069767. The next prime is 118647069803. The reversal of 118647069781 is 187960746811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104422691025 + 14224378756 = 323145^2 + 119266^2 .

It is an emirp because it is prime and its reverse (187960746811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118647069781 - 2¹¹ = 118647067733 is a prime.

It is a super-2 number, since 2×118647069781² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118647069581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59323534890 + 59323534891.

It is an arithmetic number, because the mean of its divisors is an integer number (59323534891).

Almost surely, 2^118647069781 is an apocalyptic number.

It is an amenable number.

118647069781 is a deficient number, since it is larger than the sum of its proper divisors (1).

118647069781 is an equidigital number, since it uses as much as digits as its factorization.

118647069781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4064256, while the sum is 58.

The spelling of 118647069781 in words is "one hundred eighteen billion, six hundred forty-seven million, sixty-nine thousand, seven hundred eighty-one".