54974778881 has 8 divisors (see below), whose sum is σ = 60229881504. Its totient is φ = 49762575520.

The previous prime is 54974778869. The next prime is 54974778889. The reversal of 54974778881 is 18887747945.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 54974778881 - 2²² = 54970584577 is a prime.

It is a super-2 number, since 2×54974778881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (54974778889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10722131 + ... + 10727256.

It is an arithmetic number, because the mean of its divisors is an integer number (7528735188).

Almost surely, 2^54974778881 is an apocalyptic number.

It is an amenable number.

54974778881 is a deficient number, since it is larger than the sum of its proper divisors (5255102623).

54974778881 is a wasteful number, since it uses less digits than its factorization.

54974778881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21449631.

The product of its digits is 126443520, while the sum is 68.

The spelling of 54974778881 in words is "fifty-four billion, nine hundred seventy-four million, seven hundred seventy-eight thousand, eight hundred eighty-one".