124077181961 has 2 divisors, whose sum is σ = 124077181962. Its totient is φ = 124077181960.

The previous prime is 124077181931. The next prime is 124077181979. The reversal of 124077181961 is 169181770421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95357440000 + 28719741961 = 308800^2 + 169469^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124077181961 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (124077181931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62038590980 + 62038590981.

It is an arithmetic number, because the mean of its divisors is an integer number (62038590981).

Almost surely, 2^124077181961 is an apocalyptic number.

It is an amenable number.

124077181961 is a deficient number, since it is larger than the sum of its proper divisors (1).

124077181961 is an equidigital number, since it uses as much as digits as its factorization.

124077181961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 47.

The spelling of 124077181961 in words is "one hundred twenty-four billion, seventy-seven million, one hundred eighty-one thousand, nine hundred sixty-one".