54464051440 has 20 divisors (see below), whose sum is σ = 126628919784. Its totient is φ = 21785620544.

The previous prime is 54464051429. The next prime is 54464051449. The reversal of 54464051440 is 4415046445.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 54464051440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54464051449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340400242 + ... + 340400401.

Almost surely, 2^54464051440 is an apocalyptic number.

It is an amenable number.

54464051440 is an abundant number, since it is smaller than the sum of its proper divisors (72164868344).

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

54464051440 is a wasteful number, since it uses less digits than its factorization.

54464051440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680800656 (or 680800650 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 37.

Adding to 54464051440 its reverse (4415046445), we get a palindrome (58879097885).

The spelling of 54464051440 in words is "fifty-four billion, four hundred sixty-four million, fifty-one thousand, four hundred forty".