75757651121 has 2 divisors, whose sum is σ = 75757651122. Its totient is φ = 75757651120.

The previous prime is 75757651103. The next prime is 75757651133. The reversal of 75757651121 is 12115675757.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40998150400 + 34759500721 = 202480^2 + 186439^2 .

It is an emirp because it is prime and its reverse (12115675757) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75757651121 is a prime.

It is not a weakly prime, because it can be changed into another prime (75757659121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37878825560 + 37878825561.

It is an arithmetic number, because the mean of its divisors is an integer number (37878825561).

Almost surely, 2^75757651121 is an apocalyptic number.

It is an amenable number.

75757651121 is a deficient number, since it is larger than the sum of its proper divisors (1).

75757651121 is an equidigital number, since it uses as much as digits as its factorization.

75757651121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 514500, while the sum is 47.

The spelling of 75757651121 in words is "seventy-five billion, seven hundred fifty-seven million, six hundred fifty-one thousand, one hundred twenty-one".