73645887441 has 32 divisors (see below), whose sum is σ = 119346626560. Its totient is φ = 39457414656.

The previous prime is 73645887433. The next prime is 73645887443. The reversal of 73645887441 is 14478854637.

It is not a de Polignac number, because 73645887441 - 2³ = 73645887433 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (73645887443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 912721 + ... + 990126.

It is an arithmetic number, because the mean of its divisors is an integer number (3729582080).

Almost surely, 2^73645887441 is an apocalyptic number.

It is an amenable number.

73645887441 is a deficient number, since it is larger than the sum of its proper divisors (45700739119).

73645887441 is a wasteful number, since it uses less digits than its factorization.

73645887441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1902973.

The product of its digits is 18063360, while the sum is 57.

The spelling of 73645887441 in words is "seventy-three billion, six hundred forty-five million, eight hundred eighty-seven thousand, four hundred forty-one".