75228550272 has 72 divisors (see below), whose sum is σ = 216504781545. Its totient is φ = 25073080320.

The previous prime is 75228550247. The next prime is 75228550283. The reversal of 75228550272 is 27205582257.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

75228550272 is a `hidden beast` number, since 7 + 5 + 2 + 28 + 550 + 2 + 72 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 73276324416 + 1952225856 = 270696^2 + 44184^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=193944.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9305272 + ... + 9313352.

Almost surely, 2^75228550272 is an apocalyptic number.

75228550272 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

75228550272 is an abundant number, since it is smaller than the sum of its proper divisors (141276231273).

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

75228550272 is an frugal number, since it uses more digits than its factorization.

75228550272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16182 (or 8086 counting only the distinct ones).

The product of its (nonzero) digits is 784000, while the sum is 45.

The spelling of 75228550272 in words is "seventy-five billion, two hundred twenty-eight million, five hundred fifty thousand, two hundred seventy-two".