75823768249 has 2 divisors, whose sum is σ = 75823768250. Its totient is φ = 75823768248.

The previous prime is 75823768201. The next prime is 75823768259. The reversal of 75823768249 is 94286732857.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44930433024 + 30893335225 = 211968^2 + 175765^2 .

It is a cyclic number.

It is not a de Polignac number, because 75823768249 - 2²¹ = 75821671097 is a prime.

It is not a weakly prime, because it can be changed into another prime (75823768259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37911884124 + 37911884125.

It is an arithmetic number, because the mean of its divisors is an integer number (37911884125).

Almost surely, 2^75823768249 is an apocalyptic number.

It is an amenable number.

75823768249 is a deficient number, since it is larger than the sum of its proper divisors (1).

75823768249 is an equidigital number, since it uses as much as digits as its factorization.

75823768249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40642560, while the sum is 61.

The spelling of 75823768249 in words is "seventy-five billion, eight hundred twenty-three million, seven hundred sixty-eight thousand, two hundred forty-nine".