65321264250 has 192 divisors, whose sum is σ = 192937365504. Its totient is φ = 15814800000.

The previous prime is 65321264249. The next prime is 65321264311. The reversal of 65321264250 is 5246212356.

65321264250 is a `hidden beast` number, since 6 + 5 + 3 + 2 + 1 + 2 + 642 + 5 + 0 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 28486104 + ... + 28488396.

It is an arithmetic number, because the mean of its divisors is an integer number (1004882112).

Almost surely, 2^65321264250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65321264250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96468682752).

65321264250 is an abundant number, since it is smaller than the sum of its proper divisors (127616101254).

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

65321264250 is a wasteful number, since it uses less digits than its factorization.

65321264250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3478 (or 3465 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 65321264250 in words is "sixty-five billion, three hundred twenty-one million, two hundred sixty-four thousand, two hundred fifty".