75757529849 has 2 divisors, whose sum is σ = 75757529850. Its totient is φ = 75757529848.

The previous prime is 75757529843. The next prime is 75757529891. The reversal of 75757529849 is 94892575757.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72397588624 + 3359941225 = 269068^2 + 57965^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75757529849 is a prime.

It is not a weakly prime, because it can be changed into another prime (75757529843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37878764924 + 37878764925.

It is an arithmetic number, because the mean of its divisors is an integer number (37878764925).

Almost surely, 2^75757529849 is an apocalyptic number.

It is an amenable number.

75757529849 is a deficient number, since it is larger than the sum of its proper divisors (1).

75757529849 is an equidigital number, since it uses as much as digits as its factorization.

75757529849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 222264000, while the sum is 68.

The spelling of 75757529849 in words is "seventy-five billion, seven hundred fifty-seven million, five hundred twenty-nine thousand, eight hundred forty-nine".