65288668896 has 144 divisors (see below), whose sum is σ = 209310771600. Its totient is φ = 19784413440.

The previous prime is 65288668877. The next prime is 65288668897. The reversal of 65288668896 is 69886688256.

65288668896 is a `hidden beast` number, since 6 + 528 + 8 + 6 + 6 + 8 + 8 + 96 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×65288668896² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65288668897) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 207711 + ... + 416798.

It is an arithmetic number, because the mean of its divisors is an integer number (1453547025).

Almost surely, 2^65288668896 is an apocalyptic number.

65288668896 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

65288668896 is an abundant number, since it is smaller than the sum of its proper divisors (144022102704).

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

65288668896 is a wasteful number, since it uses less digits than its factorization.

65288668896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624550 (or 624525 counting only the distinct ones).

The product of its digits is 477757440, while the sum is 72.

The spelling of 65288668896 in words is "sixty-five billion, two hundred eighty-eight million, six hundred sixty-eight thousand, eight hundred ninety-six".