188946463377457 has 2 divisors, whose sum is σ = 188946463377458. Its totient is φ = 188946463377456.

The previous prime is 188946463377401. The next prime is 188946463377481. The reversal of 188946463377457 is 754773364649881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149039561246976 + 39906902130481 = 12208176^2 + 6317191^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-188946463377457 is a prime.

It is not a weakly prime, because it can be changed into another prime (188946463377857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94473231688728 + 94473231688729.

It is an arithmetic number, because the mean of its divisors is an integer number (94473231688729).

Almost surely, 2^{188946463377457} is an apocalyptic number.

It is an amenable number.

188946463377457 is a deficient number, since it is larger than the sum of its proper divisors (1).

188946463377457 is an equidigital number, since it uses as much as digits as its factorization.

188946463377457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20483850240, while the sum is 82.

The spelling of 188946463377457 in words is "one hundred eighty-eight trillion, nine hundred forty-six billion, four hundred sixty-three million, three hundred seventy-seven thousand, four hundred fifty-seven".