65415251456 has 80 divisors (see below), whose sum is σ = 138492135936. Its totient is φ = 30761189376.

The previous prime is 65415251437. The next prime is 65415251471.

65415251456 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23386250 + ... + 23389046.

Almost surely, 2^65415251456 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 65415251456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69246067968).

65415251456 is an abundant number, since it is smaller than the sum of its proper divisors (73076884480).

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

65415251456 is a wasteful number, since it uses less digits than its factorization.

65415251456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5519 (or 5503 counting only the distinct ones).

The product of its digits is 720000, while the sum is 44.

The spelling of 65415251456 in words is "sixty-five billion, four hundred fifteen million, two hundred fifty-one thousand, four hundred fifty-six".