65315426512 has 80 divisors (see below), whose sum is σ = 148886006400. Its totient is φ = 27744342528.

The previous prime is 65315426459. The next prime is 65315426531. The reversal of 65315426512 is 21562451356.

It is a super-2 number, since 2×65315426512² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 567483 + ... + 672805.

It is an arithmetic number, because the mean of its divisors is an integer number (1861075080).

Almost surely, 2^65315426512 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 65315426512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74443003200).

65315426512 is an abundant number, since it is smaller than the sum of its proper divisors (83570579888).

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

65315426512 is a wasteful number, since it uses less digits than its factorization.

65315426512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105465 (or 105445 counting only the distinct ones).

The product of its digits is 216000, while the sum is 40.

Adding to 65315426512 its reverse (21562451356), we get a palindrome (86877877868).

The spelling of 65315426512 in words is "sixty-five billion, three hundred fifteen million, four hundred twenty-six thousand, five hundred twelve".