75999102121 has 4 divisors (see below), whose sum is σ = 76696341700. Its totient is φ = 75301862544.

The previous prime is 75999102107. The next prime is 75999102149. The reversal of 75999102121 is 12120199957.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19934333721 + 56064768400 = 141189^2 + 236780^2 .

It is a cyclic number.

It is not a de Polignac number, because 75999102121 - 2¹⁷ = 75998971049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75999102821) 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, 348619626 + ... + 348619843.

It is an arithmetic number, because the mean of its divisors is an integer number (19174085425).

Almost surely, 2^75999102121 is an apocalyptic number.

It is an amenable number.

75999102121 is a deficient number, since it is larger than the sum of its proper divisors (697239579).

75999102121 is a wasteful number, since it uses less digits than its factorization.

75999102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697239578.

The product of its (nonzero) digits is 102060, while the sum is 46.

The spelling of 75999102121 in words is "seventy-five billion, nine hundred ninety-nine million, one hundred two thousand, one hundred twenty-one".