73745171747 has 6 divisors (see below), whose sum is σ = 79854239412. Its totient is φ = 68072466072.

The previous prime is 73745171741. The next prime is 73745171749. The reversal of 73745171747 is 74717154737.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-73745171747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73745171741) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 218180813 + ... + 218181150.

It is an arithmetic number, because the mean of its divisors is an integer number (13309039902).

Almost surely, 2^73745171747 is an apocalyptic number.

73745171747 is a deficient number, since it is larger than the sum of its proper divisors (6109067665).

73745171747 is a wasteful number, since it uses less digits than its factorization.

73745171747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436361989 (or 436361976 counting only the distinct ones).

The product of its digits is 4033680, while the sum is 53.

The spelling of 73745171747 in words is "seventy-three billion, seven hundred forty-five million, one hundred seventy-one thousand, seven hundred forty-seven".