54378975549 has 16 divisors (see below), whose sum is σ = 72939426560. Its totient is φ = 36035772480.

The previous prime is 54378975533. The next prime is 54378975559. The reversal of 54378975549 is 94557987345.

It is a happy number.

It is not a de Polignac number, because 54378975549 - 2⁴ = 54378975533 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54378975549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54378975559) by changing a digit.

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, 1219947 + ... + 1263735.

It is an arithmetic number, because the mean of its divisors is an integer number (4558714160).

Almost surely, 2^54378975549 is an apocalyptic number.

It is an amenable number.

54378975549 is a deficient number, since it is larger than the sum of its proper divisors (18560451011).

54378975549 is a wasteful number, since it uses less digits than its factorization.

54378975549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46260.

The product of its digits is 190512000, while the sum is 66.

The spelling of 54378975549 in words is "fifty-four billion, three hundred seventy-eight million, nine hundred seventy-five thousand, five hundred forty-nine".