75974140343809 has 4 divisors (see below), whose sum is σ = 76018285691460. Its totient is φ = 75929994996160.

The previous prime is 75974140343789. The next prime is 75974140343837. The reversal of 75974140343809 is 90834304147957.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 66547416675600 + 9426723668209 = 8157660^2 + 3070297^2 .

It is a cyclic number.

It is not a de Polignac number, because 75974140343809 - 2¹¹ = 75974140341761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75974140343009) 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, 22072671244 + ... + 22072674685.

It is an arithmetic number, because the mean of its divisors is an integer number (19004571422865).

Almost surely, 2^{75974140343809} is an apocalyptic number.

It is an amenable number.

75974140343809 is a deficient number, since it is larger than the sum of its proper divisors (44145347651).

75974140343809 is a wasteful number, since it uses less digits than its factorization.

75974140343809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44145347650.

The product of its (nonzero) digits is 91445760, while the sum is 64.

The spelling of 75974140343809 in words is "seventy-five trillion, nine hundred seventy-four billion, one hundred forty million, three hundred forty-three thousand, eight hundred nine".