65605413427 has 4 divisors (see below), whose sum is σ = 67131120760. Its totient is φ = 64079706096.

The previous prime is 65605413413. The next prime is 65605413431. The reversal of 65605413427 is 72431450656.

65605413427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 65605413427 - 2¹⁹ = 65604889139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 1525707289 = 65605413427 / (6 + 5 + 6 + 0 + 5 + 4 + 1 + 3 + 4 + 2 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65605413407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 762853602 + ... + 762853687.

It is an arithmetic number, because the mean of its divisors is an integer number (16782780190).

Almost surely, 2^65605413427 is an apocalyptic number.

65605413427 is a deficient number, since it is larger than the sum of its proper divisors (1525707333).

65605413427 is a wasteful number, since it uses less digits than its factorization.

65605413427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1525707332.

The product of its (nonzero) digits is 604800, while the sum is 43.

The spelling of 65605413427 in words is "sixty-five billion, six hundred five million, four hundred thirteen thousand, four hundred twenty-seven".