65436558664 has 16 divisors (see below), whose sum is σ = 128028049920. Its totient is φ = 31295745360.

The previous prime is 65436558647. The next prime is 65436558673. The reversal of 65436558664 is 46685563456.

It is a super-2 number, since 2×65436558664² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65436558599 and 65436558608.

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 3 ways as a sum of consecutive naturals, for example, 177816552 + ... + 177816919.

It is an arithmetic number, because the mean of its divisors is an integer number (8001753120).

Almost surely, 2^65436558664 is an apocalyptic number.

It is an amenable number.

65436558664 is a deficient number, since it is larger than the sum of its proper divisors (62591491256).

65436558664 is a wasteful number, since it uses less digits than its factorization.

65436558664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355633500 (or 355633496 counting only the distinct ones).

The product of its digits is 62208000, while the sum is 58.

It can be divided in two parts, 65436 and 558664, that added together give a square (624100 = 790²).

The spelling of 65436558664 in words is "sixty-five billion, four hundred thirty-six million, five hundred fifty-eight thousand, six hundred sixty-four".