63976980111977 has 2 divisors, whose sum is σ = 63976980111978. Its totient is φ = 63976980111976.

The previous prime is 63976980111917. The next prime is 63976980111991. The reversal of 63976980111977 is 77911108967936.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61444731691561 + 2532248420416 = 7838669^2 + 1591304^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63976980111977 is a prime.

It is not a weakly prime, because it can be changed into another prime (63976980111917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31988490055988 + 31988490055989.

It is an arithmetic number, because the mean of its divisors is an integer number (31988490055989).

Almost surely, 2^{63976980111977} is an apocalyptic number.

It is an amenable number.

63976980111977 is a deficient number, since it is larger than the sum of its proper divisors (1).

63976980111977 is an equidigital number, since it uses as much as digits as its factorization.

63976980111977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216040608, while the sum is 74.

The spelling of 63976980111977 in words is "sixty-three trillion, nine hundred seventy-six billion, nine hundred eighty million, one hundred eleven thousand, nine hundred seventy-seven".