75373773521 has 8 divisors (see below), whose sum is σ = 76332842880. Its totient is φ = 74414828592.

The previous prime is 75373773493. The next prime is 75373773529. The reversal of 75373773521 is 12537737357.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75373773521 - 2²² = 75369579217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75373773521.

It is not an unprimeable number, because it can be changed into a prime (75373773529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2173706 + ... + 2208108.

It is an arithmetic number, because the mean of its divisors is an integer number (9541605360).

Almost surely, 2^75373773521 is an apocalyptic number.

It is an amenable number.

75373773521 is a deficient number, since it is larger than the sum of its proper divisors (959069359).

75373773521 is a wasteful number, since it uses less digits than its factorization.

75373773521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62215.

The product of its digits is 3241350, while the sum is 50.

The spelling of 75373773521 in words is "seventy-five billion, three hundred seventy-three million, seven hundred seventy-three thousand, five hundred twenty-one".