67105580545 has 4 divisors (see below), whose sum is σ = 80526696660. Its totient is φ = 53684464432.

The previous prime is 67105580501. The next prime is 67105580561. The reversal of 67105580545 is 54508550176.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16929132544 + 50176448001 = 130112^2 + 224001^2 .

It is a cyclic number.

It is not a de Polignac number, because 67105580545 - 2¹⁵ = 67105547777 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67105580495 and 67105580504.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6710558050 + ... + 6710558059.

It is an arithmetic number, because the mean of its divisors is an integer number (20131674165).

Almost surely, 2^67105580545 is an apocalyptic number.

It is an amenable number.

67105580545 is a deficient number, since it is larger than the sum of its proper divisors (13421116115).

67105580545 is a wasteful number, since it uses less digits than its factorization.

67105580545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13421116114.

The product of its (nonzero) digits is 840000, while the sum is 46.

The spelling of 67105580545 in words is "sixty-seven billion, one hundred five million, five hundred eighty thousand, five hundred forty-five".