75149471756 has 12 divisors (see below), whose sum is σ = 131516107800. Its totient is φ = 37573440960.

The previous prime is 75149471723. The next prime is 75149471759. The reversal of 75149471756 is 65717494157.

It is not an unprimeable number, because it can be changed into a prime (75149471759) by changing a digit.

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, 186710 + ... + 430301.

It is an arithmetic number, because the mean of its divisors is an integer number (10959675650).

Almost surely, 2^75149471756 is an apocalyptic number.

It is an amenable number.

75149471756 is a deficient number, since it is larger than the sum of its proper divisors (56366636044).

75149471756 is a wasteful number, since it uses less digits than its factorization.

75149471756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647464 (or 647462 counting only the distinct ones).

The product of its digits is 7408800, while the sum is 56.

The spelling of 75149471756 in words is "seventy-five billion, one hundred forty-nine million, four hundred seventy-one thousand, seven hundred fifty-six".