75513325513 has 4 divisors (see below), whose sum is σ = 75628966788. Its totient is φ = 75397684240.

The previous prime is 75513325501. The next prime is 75513325519. The reversal of 75513325513 is 31552331557.

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 8018844304 + 67494481209 = 89548^2 + 259797^2 .

It is a cyclic number.

It is not a de Polignac number, because 75513325513 - 2²¹ = 75511228361 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75513325519) 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, 57819658 + ... + 57820963.

It is an arithmetic number, because the mean of its divisors is an integer number (18907241697).

Almost surely, 2^75513325513 is an apocalyptic number.

It is an amenable number.

75513325513 is a deficient number, since it is larger than the sum of its proper divisors (115641275).

75513325513 is a wasteful number, since it uses less digits than its factorization.

75513325513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115641274.

The product of its digits is 236250, while the sum is 40.

The spelling of 75513325513 in words is "seventy-five billion, five hundred thirteen million, three hundred twenty-five thousand, five hundred thirteen".