75052172056 has 8 divisors (see below), whose sum is σ = 140722822620. Its totient is φ = 37526086024.

The previous prime is 75052171979. The next prime is 75052172077. The reversal of 75052172056 is 65027125057.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4690760746 + ... + 4690760761.

Almost surely, 2^75052172056 is an apocalyptic number.

It is an amenable number.

75052172056 is a deficient number, since it is larger than the sum of its proper divisors (65670650564).

75052172056 is a wasteful number, since it uses less digits than its factorization.

75052172056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9381521513 (or 9381521509 counting only the distinct ones).

The product of its (nonzero) digits is 147000, while the sum is 40.

The spelling of 75052172056 in words is "seventy-five billion, fifty-two million, one hundred seventy-two thousand, fifty-six".