75128442872 has 48 divisors (see below), whose sum is σ = 168293131560. Its totient is φ = 31327684416.

The previous prime is 75128442871. The next prime is 75128442889. The reversal of 75128442872 is 27824482157.

It is a self number, because there is not a number n which added to its sum of digits gives 75128442872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75128442871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2575418 + ... + 2604425.

Almost surely, 2^75128442872 is an apocalyptic number.

It is an amenable number.

75128442872 is an abundant number, since it is smaller than the sum of its proper divisors (93164688688).

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

75128442872 is a wasteful number, since it uses less digits than its factorization.

75128442872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5179900 (or 5179889 counting only the distinct ones).

The product of its digits is 2007040, while the sum is 50.

The spelling of 75128442872 in words is "seventy-five billion, one hundred twenty-eight million, four hundred forty-two thousand, eight hundred seventy-two".