65488836666 has 16 divisors (see below), whose sum is σ = 142884734688. Its totient is φ = 19845102000.

The previous prime is 65488836617. The next prime is 65488836709. The reversal of 65488836666 is 66663888456.

It is a Harshad number since it is a multiple of its sum of digits (66), and also a Moran number because the ratio is a prime number: 992255101 = 65488836666 / (6 + 5 + 4 + 8 + 8 + 8 + 3 + 6 + 6 + 6 + 6).

It is a junction number, because it is equal to n+sod(n) for n = 65488836597 and 65488836606.

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, 496127485 + ... + 496127616.

It is an arithmetic number, because the mean of its divisors is an integer number (8930295918).

Almost surely, 2^65488836666 is an apocalyptic number.

65488836666 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

65488836666 is an abundant number, since it is smaller than the sum of its proper divisors (77395898022).

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

65488836666 is a wasteful number, since it uses less digits than its factorization.

65488836666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992255117.

The product of its digits is 238878720, while the sum is 66.

The spelling of 65488836666 in words is "sixty-five billion, four hundred eighty-eight million, eight hundred thirty-six thousand, six hundred sixty-six".