75243344334257 has 4 divisors (see below), whose sum is σ = 82083648364656. Its totient is φ = 68403040303860.

The previous prime is 75243344334241. The next prime is 75243344334269.

75243344334257 is nontrivially palindromic in base 10.

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.

It is a cyclic number.

It is not a de Polignac number, because 75243344334257 - 2⁴ = 75243344334241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75243344334287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3420152015183 + ... + 3420152015204.

It is an arithmetic number, because the mean of its divisors is an integer number (20520912091164).

Almost surely, 2^{75243344334257} is an apocalyptic number.

It is an amenable number.

75243344334257 is a deficient number, since it is larger than the sum of its proper divisors (6840304030399).

75243344334257 is a wasteful number, since it uses less digits than its factorization.

75243344334257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6840304030398.

The product of its digits is 101606400, while the sum is 56.

The spelling of 75243344334257 in words is "seventy-five trillion, two hundred forty-three billion, three hundred forty-four million, three hundred thirty-four thousand, two hundred fifty-seven".