65215311351256 has 64 divisors (see below), whose sum is σ = 142022058665760. Its totient is φ = 27745456896000.

The previous prime is 65215311351247. The next prime is 65215311351257.

65215311351256 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×65215311351256² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65215311351257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120152215 + ... + 120693766.

Almost surely, 2^{65215311351256} is an apocalyptic number.

It is an amenable number.

65215311351256 is an abundant number, since it is smaller than the sum of its proper divisors (76806747314504).

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

65215311351256 is a wasteful number, since it uses less digits than its factorization.

65215311351256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240846196 (or 240846192 counting only the distinct ones).

The product of its digits is 810000, while the sum is 46.

It can be divided in two parts, 6521531 and 1351256, that added together give a palindrome (7872787).

The spelling of 65215311351256 in words is "sixty-five trillion, two hundred fifteen billion, three hundred eleven million, three hundred fifty-one thousand, two hundred fifty-six".