65366067968 has 72 divisors (see below), whose sum is σ = 131153595216. Its totient is φ = 32514048000.

The previous prime is 65366067967. The next prime is 65366068021. The reversal of 65366067968 is 86976066356.

It is a self number, because there is not a number n which added to its sum of digits gives 65366067968.

It is not an unprimeable number, because it can be changed into a prime (65366067967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54425768 + ... + 54426968.

Almost surely, 2^65366067968 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 65366067968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65576797608).

65366067968 is an abundant number, since it is smaller than the sum of its proper divisors (65787527248).

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

65366067968 is a wasteful number, since it uses less digits than its factorization.

65366067968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2141 (or 2127 counting only the distinct ones).

The product of its (nonzero) digits is 58786560, while the sum is 62.

The spelling of 65366067968 in words is "sixty-five billion, three hundred sixty-six million, sixty-seven thousand, nine hundred sixty-eight".