73645151665 has 16 divisors (see below), whose sum is σ = 94245863040. Its totient is φ = 55051534080.

The previous prime is 73645151659. The next prime is 73645151669. The reversal of 73645151665 is 56615154637.

It is not a de Polignac number, because 73645151665 - 2¹⁷ = 73645020593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73645151669) 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 in 15 ways as a sum of consecutive naturals, for example, 3104781 + ... + 3128410.

It is an arithmetic number, because the mean of its divisors is an integer number (5890366440).

Almost surely, 2^73645151665 is an apocalyptic number.

It is an amenable number.

73645151665 is a deficient number, since it is larger than the sum of its proper divisors (20600711375).

73645151665 is a wasteful number, since it uses less digits than its factorization.

73645151665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6233352.

The product of its digits is 2268000, while the sum is 49.

The spelling of 73645151665 in words is "seventy-three billion, six hundred forty-five million, one hundred fifty-one thousand, six hundred sixty-five".