124691697161 has 2 divisors, whose sum is σ = 124691697162. Its totient is φ = 124691697160.

The previous prime is 124691697089. The next prime is 124691697167. The reversal of 124691697161 is 161796196421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106810658761 + 17881038400 = 326819^2 + 133720^2 .

It is a cyclic number.

It is not a de Polignac number, because 124691697161 - 2¹⁰ = 124691696137 is a prime.

It is not a weakly prime, because it can be changed into another prime (124691697167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62345848580 + 62345848581.

It is an arithmetic number, because the mean of its divisors is an integer number (62345848581).

Almost surely, 2^124691697161 is an apocalyptic number.

It is an amenable number.

124691697161 is a deficient number, since it is larger than the sum of its proper divisors (1).

124691697161 is an equidigital number, since it uses as much as digits as its factorization.

124691697161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 53.

The spelling of 124691697161 in words is "one hundred twenty-four billion, six hundred ninety-one million, six hundred ninety-seven thousand, one hundred sixty-one".