118930646521 has 2 divisors, whose sum is σ = 118930646522. Its totient is φ = 118930646520.

The previous prime is 118930646473. The next prime is 118930646551. The reversal of 118930646521 is 125646039811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82369000000 + 36561646521 = 287000^2 + 191211^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118930646521 is a prime.

It is not a weakly prime, because it can be changed into another prime (118930646551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59465323260 + 59465323261.

It is an arithmetic number, because the mean of its divisors is an integer number (59465323261).

Almost surely, 2^118930646521 is an apocalyptic number.

It is an amenable number.

118930646521 is a deficient number, since it is larger than the sum of its proper divisors (1).

118930646521 is an equidigital number, since it uses as much as digits as its factorization.

118930646521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 118930646521 in words is "one hundred eighteen billion, nine hundred thirty million, six hundred forty-six thousand, five hundred twenty-one".