65956439418 has 32 divisors (see below), whose sum is σ = 144178030080. Its totient is φ = 20024724480.

The previous prime is 65956439399. The next prime is 65956439429. The reversal of 65956439418 is 81493465956.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10426383 + ... + 10432706.

It is an arithmetic number, because the mean of its divisors is an integer number (4505563440).

Almost surely, 2^65956439418 is an apocalyptic number.

65956439418 is an abundant number, since it is smaller than the sum of its proper divisors (78221590662).

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

65956439418 is a wasteful number, since it uses less digits than its factorization.

65956439418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20859142.

The product of its digits is 27993600, while the sum is 60.

The spelling of 65956439418 in words is "sixty-five billion, nine hundred fifty-six million, four hundred thirty-nine thousand, four hundred eighteen".