75131263820 has 12 divisors (see below), whose sum is σ = 157775654064. Its totient is φ = 30052505520.

The previous prime is 75131263813. The next prime is 75131263829. The reversal of 75131263820 is 2836213157.

It is not an unprimeable number, because it can be changed into a prime (75131263829) 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, 1878281576 + ... + 1878281615.

It is an arithmetic number, because the mean of its divisors is an integer number (13147971172).

Almost surely, 2^75131263820 is an apocalyptic number.

It is an amenable number.

75131263820 is an abundant number, since it is smaller than the sum of its proper divisors (82644390244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75131263820 is a wasteful number, since it uses less digits than its factorization.

75131263820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3756563200 (or 3756563198 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

Adding to 75131263820 its reverse (2836213157), we get a palindrome (77967476977).

The spelling of 75131263820 in words is "seventy-five billion, one hundred thirty-one million, two hundred sixty-three thousand, eight hundred twenty".