75480647131 has 4 divisors (see below), whose sum is σ = 75558383064. Its totient is φ = 75402911200.

The previous prime is 75480647129. The next prime is 75480647171. The reversal of 75480647131 is 13174608457.

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

It is a cyclic number.

It is not a de Polignac number, because 75480647131 - 2¹ = 75480647129 is a prime.

It is a super-2 number, since 2×75480647131² (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 (75480647171) 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, 38866510 + ... + 38868451.

It is an arithmetic number, because the mean of its divisors is an integer number (18889595766).

Almost surely, 2^75480647131 is an apocalyptic number.

75480647131 is a deficient number, since it is larger than the sum of its proper divisors (77735933).

75480647131 is an equidigital number, since it uses as much as digits as its factorization.

75480647131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77735932.

The product of its (nonzero) digits is 564480, while the sum is 46.

The spelling of 75480647131 in words is "seventy-five billion, four hundred eighty million, six hundred forty-seven thousand, one hundred thirty-one".