65570116968 has 96 divisors (see below), whose sum is σ = 188516694600. Its totient is φ = 20517986304.

The previous prime is 65570116961. The next prime is 65570116987. The reversal of 65570116968 is 86961107556.

65570116968 is a `hidden beast` number, since 6 + 5 + 570 + 1 + 1 + 6 + 9 + 68 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 45694192644 + 19875924324 = 213762^2 + 140982^2 .

It is not an unprimeable number, because it can be changed into a prime (65570116961) 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, 407280 + ... + 544992.

Almost surely, 2^65570116968 is an apocalyptic number.

65570116968 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65570116968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94258347300).

65570116968 is an abundant number, since it is smaller than the sum of its proper divisors (122946577632).

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

65570116968 is a wasteful number, since it uses less digits than its factorization.

65570116968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138131 (or 138124 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 54.

The spelling of 65570116968 in words is "sixty-five billion, five hundred seventy million, one hundred sixteen thousand, nine hundred sixty-eight".