65513798242488 has 256 divisors, whose sum is σ = 186589827072000. Its totient is φ = 21288895777152.

The previous prime is 65513798242463. The next prime is 65513798242511. The reversal of 65513798242488 is 88424289731556.

65513798242488 is a `hidden beast` number, since 6 + 5 + 5 + 1 + 37 + 98 + 2 + 424 + 88 = 666.

65513798242488 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3462847893 + ... + 3462866811.

It is an arithmetic number, because the mean of its divisors is an integer number (728866512000).

Almost surely, 2^{65513798242488} 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 65513798242488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93294913536000).

65513798242488 is an abundant number, since it is smaller than the sum of its proper divisors (121076028829512).

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

65513798242488 is a wasteful number, since it uses less digits than its factorization.

65513798242488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20311 (or 20301 counting only the distinct ones).

The product of its digits is 928972800, while the sum is 72.

The spelling of 65513798242488 in words is "sixty-five trillion, five hundred thirteen billion, seven hundred ninety-eight million, two hundred forty-two thousand, four hundred eighty-eight".