65471422417456 has 80 divisors (see below), whose sum is σ = 139401374491008. Its totient is φ = 29540711232000.

The previous prime is 65471422417439. The next prime is 65471422417463.

65471422417456 is nontrivially palindromic in base 10.

It is a super-4 number, since 4×65471422417456⁴ (a number of 56 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 65471422417456.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 444816931 + ... + 444964093.

Almost surely, 2^{65471422417456} 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 65471422417456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69700687245504).

65471422417456 is an abundant number, since it is smaller than the sum of its proper divisors (73929952073552).

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

65471422417456 is a wasteful number, since it uses less digits than its factorization.

65471422417456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165770 (or 165764 counting only the distinct ones).

The product of its digits is 45158400, while the sum is 58.

The spelling of 65471422417456 in words is "sixty-five trillion, four hundred seventy-one billion, four hundred twenty-two million, four hundred seventeen thousand, four hundred fifty-six".