73805381585 has 8 divisors (see below), whose sum is σ = 95379262440. Its totient is φ = 54502435584.

The previous prime is 73805381567. The next prime is 73805381593. The reversal of 73805381585 is 58518350837.

It can be written as a sum of positive squares in 4 ways, for example, as 2981269201 + 70824112384 = 54601^2 + 266128^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 73805381585 - 2²² = 73801187281 is a prime.

It is a super-2 number, since 2×73805381585² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 567733640 + ... + 567733769.

It is an arithmetic number, because the mean of its divisors is an integer number (11922407805).

Almost surely, 2^73805381585 is an apocalyptic number.

It is an amenable number.

73805381585 is a deficient number, since it is larger than the sum of its proper divisors (21573880855).

73805381585 is a wasteful number, since it uses less digits than its factorization.

73805381585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135467427.

The product of its (nonzero) digits is 4032000, while the sum is 53.

The spelling of 73805381585 in words is "seventy-three billion, eight hundred five million, three hundred eighty-one thousand, five hundred eighty-five".