75321217772 has 6 divisors (see below), whose sum is σ = 131812131108. Its totient is φ = 37660608884.

The previous prime is 75321217771. The next prime is 75321217889. The reversal of 75321217772 is 27771212357.

It is not an unprimeable number, because it can be changed into a prime (75321217771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9415152218 + ... + 9415152225.

It is an arithmetic number, because the mean of its divisors is an integer number (21968688518).

Almost surely, 2^75321217772 is an apocalyptic number.

It is an amenable number.

75321217772 is a deficient number, since it is larger than the sum of its proper divisors (56490913336).

75321217772 is a wasteful number, since it uses less digits than its factorization.

75321217772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18830304447 (or 18830304445 counting only the distinct ones).

The product of its digits is 288120, while the sum is 44.

The spelling of 75321217772 in words is "seventy-five billion, three hundred twenty-one million, two hundred seventeen thousand, seven hundred seventy-two".