75500503681 has 4 divisors (see below), whose sum is σ = 77256329392. Its totient is φ = 73744677972.

The previous prime is 75500503667. The next prime is 75500503691. The reversal of 75500503681 is 18630500557.

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 not a de Polignac number, because 75500503681 - 2¹¹ = 75500501633 is a prime.

It is a super-2 number, since 2×75500503681² (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 (75500503621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 877912791 + ... + 877912876.

It is an arithmetic number, because the mean of its divisors is an integer number (19314082348).

Almost surely, 2^75500503681 is an apocalyptic number.

It is an amenable number.

75500503681 is a deficient number, since it is larger than the sum of its proper divisors (1755825711).

75500503681 is a wasteful number, since it uses less digits than its factorization.

75500503681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1755825710.

The product of its (nonzero) digits is 126000, while the sum is 40.

The spelling of 75500503681 in words is "seventy-five billion, five hundred million, five hundred three thousand, six hundred eighty-one".