65286951912 has 576 divisors, whose sum is σ = 239927425920. Its totient is φ = 16192991232.

The previous prime is 65286951871. The next prime is 65286951923. The reversal of 65286951912 is 21915968256.

65286951912 is a `hidden beast` number, since 6 + 52 + 8 + 69 + 519 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 51124618 + ... + 51125894.

It is an arithmetic number, because the mean of its divisors is an integer number (416540670).

Almost surely, 2^65286951912 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 65286951912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119963712960).

65286951912 is an abundant number, since it is smaller than the sum of its proper divisors (174640474008).

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

65286951912 is a wasteful number, since it uses less digits than its factorization.

65286951912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352 (or 1319 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 54.

The spelling of 65286951912 in words is "sixty-five billion, two hundred eighty-six million, nine hundred fifty-one thousand, nine hundred twelve".