75124729049 has 2 divisors, whose sum is σ = 75124729050. Its totient is φ = 75124729048.

The previous prime is 75124729037. The next prime is 75124729079. The reversal of 75124729049 is 94092742157.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53525136025 + 21599593024 = 231355^2 + 146968^2 .

It is a cyclic number.

It is not a de Polignac number, because 75124729049 - 2²⁰ = 75123680473 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 75124728988 and 75124729006.

It is not a weakly prime, because it can be changed into another prime (75124729079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37562364524 + 37562364525.

It is an arithmetic number, because the mean of its divisors is an integer number (37562364525).

Almost surely, 2^75124729049 is an apocalyptic number.

It is an amenable number.

75124729049 is a deficient number, since it is larger than the sum of its proper divisors (1).

75124729049 is an equidigital number, since it uses as much as digits as its factorization.

75124729049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The spelling of 75124729049 in words is "seventy-five billion, one hundred twenty-four million, seven hundred twenty-nine thousand, forty-nine".