75207513644 has 12 divisors (see below), whose sum is σ = 131668441968. Its totient is φ = 37587958800.

The previous prime is 75207513587. The next prime is 75207513653. The reversal of 75207513644 is 44631570257.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 75207513595 and 75207513604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3938792 + ... + 3957839.

It is an arithmetic number, because the mean of its divisors is an integer number (10972370164).

Almost surely, 2^75207513644 is an apocalyptic number.

It is an amenable number.

75207513644 is a deficient number, since it is larger than the sum of its proper divisors (56460928324).

75207513644 is a wasteful number, since it uses less digits than its factorization.

75207513644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7899016 (or 7899014 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 44.

The spelling of 75207513644 in words is "seventy-five billion, two hundred seven million, five hundred thirteen thousand, six hundred forty-four".