75731587373 has 4 divisors (see below), whose sum is σ = 81557094108. Its totient is φ = 69906080640.

The previous prime is 75731587331. The next prime is 75731587387. The reversal of 75731587373 is 37378513757.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37378513757 = 13 ⋅2875270289.

It can be written as a sum of positive squares in 2 ways, for example, as 40454483689 + 35277103684 = 201133^2 + 187822^2 .

It is a cyclic number.

It is not a de Polignac number, because 75731587373 - 2¹⁴ = 75731570989 is a prime.

It is a super-2 number, since 2×75731587373² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75731587303) 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, 2912753348 + ... + 2912753373.

It is an arithmetic number, because the mean of its divisors is an integer number (20389273527).

Almost surely, 2^75731587373 is an apocalyptic number.

It is an amenable number.

75731587373 is a deficient number, since it is larger than the sum of its proper divisors (5825506735).

75731587373 is a wasteful number, since it uses less digits than its factorization.

75731587373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5825506734.

The product of its digits is 12965400, while the sum is 56.

The spelling of 75731587373 in words is "seventy-five billion, seven hundred thirty-one million, five hundred eighty-seven thousand, three hundred seventy-three".