75281309113 has 4 divisors (see below), whose sum is σ = 75292845940. Its totient is φ = 75269772288.

The previous prime is 75281309111. The next prime is 75281309171. The reversal of 75281309113 is 31190318257.

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 17490591504 + 57790717609 = 132252^2 + 240397^2 .

It is a cyclic number.

It is not a de Polignac number, because 75281309113 - 2¹ = 75281309111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75281309111) 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, 5758620 + ... + 5771677.

It is an arithmetic number, because the mean of its divisors is an integer number (18823211485).

Almost surely, 2^75281309113 is an apocalyptic number.

It is an amenable number.

75281309113 is a deficient number, since it is larger than the sum of its proper divisors (11536827).

75281309113 is a wasteful number, since it uses less digits than its factorization.

75281309113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11536826.

The product of its (nonzero) digits is 45360, while the sum is 40.

The spelling of 75281309113 in words is "seventy-five billion, two hundred eighty-one million, three hundred nine thousand, one hundred thirteen".