64536634655 has 8 divisors (see below), whose sum is σ = 80114443200. Its totient is φ = 49848986656.

The previous prime is 64536634621. The next prime is 64536634717. The reversal of 64536634655 is 55643663546.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64536634655 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64536634597 and 64536634606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222539975 + ... + 222540264.

It is an arithmetic number, because the mean of its divisors is an integer number (10014305400).

Almost surely, 2^64536634655 is an apocalyptic number.

64536634655 is a deficient number, since it is larger than the sum of its proper divisors (15577808545).

64536634655 is a wasteful number, since it uses less digits than its factorization.

64536634655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445080273.

The product of its digits is 23328000, while the sum is 53.

The spelling of 64536634655 in words is "sixty-four billion, five hundred thirty-six million, six hundred thirty-four thousand, six hundred fifty-five".