75445730672 has 40 divisors (see below), whose sum is σ = 157495284240. Its totient is φ = 34804546560.

The previous prime is 75445730653. The next prime is 75445730713. The reversal of 75445730672 is 27603754457.

It is a self number, because there is not a number n which added to its sum of digits gives 75445730672.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 357647 + ... + 528017.

It is an arithmetic number, because the mean of its divisors is an integer number (3937382106).

Almost surely, 2^75445730672 is an apocalyptic number.

It is an amenable number.

75445730672 is an abundant number, since it is smaller than the sum of its proper divisors (82049553568).

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

75445730672 is a wasteful number, since it uses less digits than its factorization.

75445730672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172521 (or 172515 counting only the distinct ones).

The product of its (nonzero) digits is 4939200, while the sum is 50.

The spelling of 75445730672 in words is "seventy-five billion, four hundred forty-five million, seven hundred thirty thousand, six hundred seventy-two".