75430748256 has 36 divisors (see below), whose sum is σ = 198012778236. Its totient is φ = 25142685760.

The previous prime is 75430748243. The next prime is 75430748257. The reversal of 75430748256 is 65284703457.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 75430748199 and 75430748208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75430748257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2676961 + ... + 2704991.

It is an arithmetic number, because the mean of its divisors is an integer number (5500354951).

Almost surely, 2^75430748256 is an apocalyptic number.

It is an amenable number.

75430748256 is an abundant number, since it is smaller than the sum of its proper divisors (122582029980).

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

75430748256 is an frugal number, since it uses more digits than its factorization.

75430748256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56075 (or 28036 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 51.

It can be divided in two parts, 75430 and 748256, that added together give a triangular number (823686 = T₁₂₈₃).

The spelling of 75430748256 in words is "seventy-five billion, four hundred thirty million, seven hundred forty-eight thousand, two hundred fifty-six".