75207643993 has 4 divisors (see below), whose sum is σ = 75748706320. Its totient is φ = 74666581668.

The previous prime is 75207643967. The next prime is 75207644051. The reversal of 75207643993 is 39934670257.

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: 39934670257 = 22073 ⋅1809209.

It is a cyclic number.

It is not a de Polignac number, because 75207643993 - 2¹³ = 75207635801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75207643913) 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, 270530955 + ... + 270531232.

It is an arithmetic number, because the mean of its divisors is an integer number (18937176580).

Almost surely, 2^75207643993 is an apocalyptic number.

It is an amenable number.

75207643993 is a deficient number, since it is larger than the sum of its proper divisors (541062327).

75207643993 is a wasteful number, since it uses less digits than its factorization.

75207643993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541062326.

The product of its (nonzero) digits is 8573040, while the sum is 55.

The spelling of 75207643993 in words is "seventy-five billion, two hundred seven million, six hundred forty-three thousand, nine hundred ninety-three".