75438243139 has 8 divisors (see below), whose sum is σ = 86221710848. Its totient is φ = 64656419400.

The previous prime is 75438243137. The next prime is 75438243149. The reversal of 75438243139 is 93134283457.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75438243139 - 2¹ = 75438243137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 75438243092 and 75438243101.

It is not an unprimeable number, because it can be changed into a prime (75438243137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311037 + ... + 497614.

It is an arithmetic number, because the mean of its divisors is an integer number (10777713856).

Almost surely, 2^75438243139 is an apocalyptic number.

75438243139 is a deficient number, since it is larger than the sum of its proper divisors (10783467709).

75438243139 is a wasteful number, since it uses less digits than its factorization.

75438243139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821985.

The product of its digits is 2177280, while the sum is 49.

The spelling of 75438243139 in words is "seventy-five billion, four hundred thirty-eight million, two hundred forty-three thousand, one hundred thirty-nine".