75016875521 has 4 divisors (see below), whose sum is σ = 85733572032. Its totient is φ = 64300179012.

The previous prime is 75016875473. The next prime is 75016875529. The reversal of 75016875521 is 12557861057.

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 a de Polignac number, because none of the positive numbers 2^k-75016875521 is a prime.

It is a super-2 number, since 2×75016875521² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75016875529) 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, 5358348245 + ... + 5358348258.

It is an arithmetic number, because the mean of its divisors is an integer number (21433393008).

Almost surely, 2^75016875521 is an apocalyptic number.

It is an amenable number.

75016875521 is a deficient number, since it is larger than the sum of its proper divisors (10716696511).

75016875521 is a wasteful number, since it uses less digits than its factorization.

75016875521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10716696510.

The product of its (nonzero) digits is 588000, while the sum is 47.

The spelling of 75016875521 in words is "seventy-five billion, sixteen million, eight hundred seventy-five thousand, five hundred twenty-one".