65399924160 has 168 divisors, whose sum is σ = 227133485280. Its totient is φ = 17270581248.

The previous prime is 65399924147. The next prime is 65399924197. The reversal of 65399924160 is 6142999356.

65399924160 is a `hidden beast` number, since 6 + 5 + 399 + 9 + 241 + 6 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 65399924097 and 65399924106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 186406 + ... + 406874.

Almost surely, 2^65399924160 is an apocalyptic number.

65399924160 is a gapful number since it is divisible by the number (60) 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 65399924160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113566742640).

65399924160 is an abundant number, since it is smaller than the sum of its proper divisors (161733561120).

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

65399924160 is a wasteful number, since it uses less digits than its factorization.

65399924160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220595 (or 220582 counting only the distinct ones).

The product of its (nonzero) digits is 3149280, while the sum is 54.

The spelling of 65399924160 in words is "sixty-five billion, three hundred ninety-nine million, nine hundred twenty-four thousand, one hundred sixty".