73127673128 has 8 divisors (see below), whose sum is σ = 137114387130. Its totient is φ = 36563836560.

The previous prime is 73127673097. The next prime is 73127673167. The reversal of 73127673128 is 82137672137.

It can be written as a sum of positive squares in only one way, i.e., 68768768644 + 4358904484 = 262238^2 + 66022^2 .

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

It is a super-2 number, since 2×73127673128² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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, 4570479563 + ... + 4570479578.

Almost surely, 2^73127673128 is an apocalyptic number.

It is an amenable number.

73127673128 is a deficient number, since it is larger than the sum of its proper divisors (63986714002).

73127673128 is a wasteful number, since it uses less digits than its factorization.

73127673128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9140959147 (or 9140959143 counting only the distinct ones).

The product of its digits is 592704, while the sum is 47.

Subtracting 73127673128 from its reverse (82137672137), we obtain a palindrome (9009999009).

The spelling of 73127673128 in words is "seventy-three billion, one hundred twenty-seven million, six hundred seventy-three thousand, one hundred twenty-eight".