65454013944 has 288 divisors, whose sum is σ = 199672527600. Its totient is φ = 19350144000.

The previous prime is 65454013931. The next prime is 65454013949. The reversal of 65454013944 is 44931045456.

65454013944 is a `hidden beast` number, since 6 + 5 + 4 + 540 + 13 + 94 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 65454013944.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65454013949) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 64233067 + ... + 64234085.

Almost surely, 2^65454013944 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 65454013944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99836263800).

65454013944 is an abundant number, since it is smaller than the sum of its proper divisors (134218513656).

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

65454013944 is a wasteful number, since it uses less digits than its factorization.

65454013944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1227 (or 1209 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 65454013944 in words is "sixty-five billion, four hundred fifty-four million, thirteen thousand, nine hundred forty-four".