65610722268 has 432 divisors, whose sum is σ = 217557718560. Its totient is φ = 16507266048.

The previous prime is 65610722239. The next prime is 65610722269. The reversal of 65610722268 is 86222701656.

65610722268 is a `hidden beast` number, since 6 + 5 + 610 + 7 + 2 + 2 + 26 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65610722269) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 44968923 + ... + 44970381.

It is an arithmetic number, because the mean of its divisors is an integer number (503605830).

Almost surely, 2^65610722268 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65610722268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108778859280).

65610722268 is an abundant number, since it is smaller than the sum of its proper divisors (151946996292).

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

65610722268 is a wasteful number, since it uses less digits than its factorization.

65610722268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586 (or 1574 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 65610722268 in words is "sixty-five billion, six hundred ten million, seven hundred twenty-two thousand, two hundred sixty-eight".