73645448905 has 12 divisors (see below), whose sum is σ = 102803035140. Its totient is φ = 50499736224.

The previous prime is 73645448867. The next prime is 73645448909. The reversal of 73645448905 is 50984454637.

It can be written as a sum of positive squares in 2 ways, for example, as 49065794064 + 24579654841 = 221508^2 + 156779^2 .

It is not a de Polignac number, because 73645448905 - 2¹¹ = 73645446857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73645448909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150296590 + ... + 150297079.

It is an arithmetic number, because the mean of its divisors is an integer number (8566919595).

Almost surely, 2^73645448905 is an apocalyptic number.

It is an amenable number.

73645448905 is a deficient number, since it is larger than the sum of its proper divisors (29157586235).

73645448905 is a wasteful number, since it uses less digits than its factorization.

73645448905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300593688 (or 300593681 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 55.

The spelling of 73645448905 in words is "seventy-three billion, six hundred forty-five million, four hundred forty-eight thousand, nine hundred five".