65605413426 has 16 divisors (see below), whose sum is σ = 149955230784. Its totient is φ = 18744403824.

The previous prime is 65605413413. The next prime is 65605413431. The reversal of 65605413426 is 62431450656.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1562033653 = 65605413426 / (6 + 5 + 6 + 0 + 5 + 4 + 1 + 3 + 4 + 2 + 6).

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 781016785 + ... + 781016868.

It is an arithmetic number, because the mean of its divisors is an integer number (9372201924).

Almost surely, 2^65605413426 is an apocalyptic number.

65605413426 is an abundant number, since it is smaller than the sum of its proper divisors (84349817358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65605413426 is a wasteful number, since it uses less digits than its factorization.

65605413426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1562033665.

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 65605413426 in words is "sixty-five billion, six hundred five million, four hundred thirteen thousand, four hundred twenty-six".