65636389676 has 54 divisors (see below), whose sum is σ = 135731885436. Its totient is φ = 27530474400.

The previous prime is 65636389613. The next prime is 65636389697. The reversal of 65636389676 is 67698363656.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 22090871 + ... + 22093841.

It is an arithmetic number, because the mean of its divisors is an integer number (2513553434).

Almost surely, 2^65636389676 is an apocalyptic number.

It is an amenable number.

65636389676 is an abundant number, since it is smaller than the sum of its proper divisors (70095495760).

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

65636389676 is a wasteful number, since it uses less digits than its factorization.

65636389676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5983 (or 2997 counting only the distinct ones).

The product of its digits is 176359680, while the sum is 65.

The spelling of 65636389676 in words is "sixty-five billion, six hundred thirty-six million, three hundred eighty-nine thousand, six hundred seventy-six".