505138114961 has 2 divisors, whose sum is σ = 505138114962. Its totient is φ = 505138114960.

The previous prime is 505138114891. The next prime is 505138114969. The reversal of 505138114961 is 169411831505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 411707022736 + 93431092225 = 641644^2 + 305665^2 .

It is a cyclic number.

It is not a de Polignac number, because 505138114961 - 2²² = 505133920657 is a prime.

It is not a weakly prime, because it can be changed into another prime (505138114969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252569057480 + 252569057481.

It is an arithmetic number, because the mean of its divisors is an integer number (252569057481).

Almost surely, 2^505138114961 is an apocalyptic number.

It is an amenable number.

505138114961 is a deficient number, since it is larger than the sum of its proper divisors (1).

505138114961 is an equidigital number, since it uses as much as digits as its factorization.

505138114961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 44.

The spelling of 505138114961 in words is "five hundred five billion, one hundred thirty-eight million, one hundred fourteen thousand, nine hundred sixty-one".