65435886378 has 24 divisors (see below), whose sum is σ = 141793142400. Its totient is φ = 21809594664.

The previous prime is 65435886371. The next prime is 65435886421. The reversal of 65435886378 is 87368853456.

It is a happy number.

65435886378 is a `hidden beast` number, since 6 + 5 + 43 + 588 + 6 + 3 + 7 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (65435886371) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 22668 + ... + 362471.

It is an arithmetic number, because the mean of its divisors is an integer number (5908047600).

Almost surely, 2^65435886378 is an apocalyptic number.

65435886378 is an abundant number, since it is smaller than the sum of its proper divisors (76357256022).

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

65435886378 is a wasteful number, since it uses less digits than its factorization.

65435886378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394586 (or 394583 counting only the distinct ones).

The product of its digits is 116121600, while the sum is 63.

The spelling of 65435886378 in words is "sixty-five billion, four hundred thirty-five million, eight hundred eighty-six thousand, three hundred seventy-eight".