75771210049 has 2 divisors, whose sum is σ = 75771210050. Its totient is φ = 75771210048.

The previous prime is 75771210007. The next prime is 75771210059. The reversal of 75771210049 is 94001217757.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61219130625 + 14552079424 = 247425^2 + 120632^2 .

It is a cyclic number.

It is not a de Polignac number, because 75771210049 - 2³⁵ = 41411471681 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 75771209987 and 75771210014.

It is not a weakly prime, because it can be changed into another prime (75771210059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37885605024 + 37885605025.

It is an arithmetic number, because the mean of its divisors is an integer number (37885605025).

Almost surely, 2^75771210049 is an apocalyptic number.

It is an amenable number.

75771210049 is a deficient number, since it is larger than the sum of its proper divisors (1).

75771210049 is an equidigital number, since it uses as much as digits as its factorization.

75771210049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 123480, while the sum is 43.

The spelling of 75771210049 in words is "seventy-five billion, seven hundred seventy-one million, two hundred ten thousand, forty-nine".