75555069243 has 4 divisors (see below), whose sum is σ = 100740092328. Its totient is φ = 50370046160.

The previous prime is 75555069209. The next prime is 75555069281. The reversal of 75555069243 is 34296055557.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34296055557 = 3 ⋅11432018519.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75555069243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75555069643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12592511538 + ... + 12592511543.

It is an arithmetic number, because the mean of its divisors is an integer number (25185023082).

Almost surely, 2^75555069243 is an apocalyptic number.

75555069243 is a deficient number, since it is larger than the sum of its proper divisors (25185023085).

75555069243 is a wasteful number, since it uses less digits than its factorization.

75555069243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25185023084.

The product of its (nonzero) digits is 5670000, while the sum is 51.

The spelling of 75555069243 in words is "seventy-five billion, five hundred fifty-five million, sixty-nine thousand, two hundred forty-three".