73712458665 has 12 divisors (see below), whose sum is σ = 127768261764. Its totient is φ = 39313311264.

The previous prime is 73712458639. The next prime is 73712458723. The reversal of 73712458665 is 56685421737.

73712458665 is a `hidden beast` number, since 7 + 37 + 1 + 24 + 586 + 6 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 40390146729 + 33322311936 = 200973^2 + 182544^2 .

It is not a de Polignac number, because 73712458665 - 2¹¹ = 73712456617 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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 in 11 ways as a sum of consecutive naturals, for example, 819027274 + ... + 819027363.

It is an arithmetic number, because the mean of its divisors is an integer number (10647355147).

Almost surely, 2^73712458665 is an apocalyptic number.

It is an amenable number.

73712458665 is a deficient number, since it is larger than the sum of its proper divisors (54055803099).

73712458665 is a wasteful number, since it uses less digits than its factorization.

73712458665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1638054648 (or 1638054645 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 54.

The spelling of 73712458665 in words is "seventy-three billion, seven hundred twelve million, four hundred fifty-eight thousand, six hundred sixty-five".