75573016421 has 8 divisors (see below), whose sum is σ = 86727541824. Its totient is φ = 64508086080.

The previous prime is 75573016417. The next prime is 75573016489. The reversal of 75573016421 is 12461037557.

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 75573016421 - 2² = 75573016417 is a prime.

It is a super-2 number, since 2×75573016421² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75573016921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22396955 + ... + 22400328.

It is an arithmetic number, because the mean of its divisors is an integer number (10840942728).

Almost surely, 2^75573016421 is an apocalyptic number.

It is an amenable number.

75573016421 is a deficient number, since it is larger than the sum of its proper divisors (11154525403).

75573016421 is a wasteful number, since it uses less digits than its factorization.

75573016421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44797531.

The product of its (nonzero) digits is 176400, while the sum is 41.

The spelling of 75573016421 in words is "seventy-five billion, five hundred seventy-three million, sixteen thousand, four hundred twenty-one".