75489267121 has 4 divisors (see below), whose sum is σ = 75495564144. Its totient is φ = 75482970100.

The previous prime is 75489267103. The next prime is 75489267209. The reversal of 75489267121 is 12176298457.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12176298457 = 73 ⋅166798609.

It is a cyclic number.

It is not a de Polignac number, because 75489267121 - 2²³ = 75480878513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75489267521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3130495 + ... + 3154516.

It is an arithmetic number, because the mean of its divisors is an integer number (18873891036).

Almost surely, 2^75489267121 is an apocalyptic number.

It is an amenable number.

75489267121 is a deficient number, since it is larger than the sum of its proper divisors (6297023).

75489267121 is a wasteful number, since it uses less digits than its factorization.

75489267121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6297022.

The product of its digits is 1693440, while the sum is 52.

The spelling of 75489267121 in words is "seventy-five billion, four hundred eighty-nine million, two hundred sixty-seven thousand, one hundred twenty-one".