75433414721 has 4 divisors (see below), whose sum is σ = 86209616832. Its totient is φ = 64657212612.

The previous prime is 75433414649. The next prime is 75433414733. The reversal of 75433414721 is 12741433457.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75433414721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75433414741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5388101045 + ... + 5388101058.

It is an arithmetic number, because the mean of its divisors is an integer number (21552404208).

Almost surely, 2^75433414721 is an apocalyptic number.

It is an amenable number.

75433414721 is a deficient number, since it is larger than the sum of its proper divisors (10776202111).

75433414721 is a wasteful number, since it uses less digits than its factorization.

75433414721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10776202110.

The product of its digits is 282240, while the sum is 41.

The spelling of 75433414721 in words is "seventy-five billion, four hundred thirty-three million, four hundred fourteen thousand, seven hundred twenty-one".