65031426768 has 480 divisors, whose sum is σ = 229885286400. Its totient is φ = 15445140480.

The previous prime is 65031426737. The next prime is 65031426827. The reversal of 65031426768 is 86762413056.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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, 22400005 + ... + 22402907.

It is an arithmetic number, because the mean of its divisors is an integer number (478927680).

Almost surely, 2^65031426768 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 65031426768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114942643200).

65031426768 is an abundant number, since it is smaller than the sum of its proper divisors (164853859632).

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

65031426768 is a wasteful number, since it uses less digits than its factorization.

65031426768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2991 (or 2974 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 65031426768 in words is "sixty-five billion, thirty-one million, four hundred twenty-six thousand, seven hundred sixty-eight".