75240667121 has 2 divisors, whose sum is σ = 75240667122. Its totient is φ = 75240667120.

The previous prime is 75240667097. The next prime is 75240667171. The reversal of 75240667121 is 12176604257.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70921548721 + 4319118400 = 266311^2 + 65720^2 .

It is a cyclic number.

It is not a de Polignac number, because 75240667121 - 2¹⁰ = 75240666097 is a prime.

It is a super-2 number, since 2×75240667121² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (75240667171) 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, 37620333560 + 37620333561.

It is an arithmetic number, because the mean of its divisors is an integer number (37620333561).

Almost surely, 2^75240667121 is an apocalyptic number.

It is an amenable number.

75240667121 is a deficient number, since it is larger than the sum of its proper divisors (1).

75240667121 is an equidigital number, since it uses as much as digits as its factorization.

75240667121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141120, while the sum is 41.

The spelling of 75240667121 in words is "seventy-five billion, two hundred forty million, six hundred sixty-seven thousand, one hundred twenty-one".