54976136209 has 4 divisors (see below), whose sum is σ = 55252398400. Its totient is φ = 54699874020.

The previous prime is 54976136197. The next prime is 54976136213. The reversal of 54976136209 is 90263167945.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 54976136209 - 2⁵ = 54976136177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54976136279) 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, 138130797 + ... + 138131194.

It is an arithmetic number, because the mean of its divisors is an integer number (13813099600).

Almost surely, 2^54976136209 is an apocalyptic number.

It is an amenable number.

54976136209 is a deficient number, since it is larger than the sum of its proper divisors (276262191).

54976136209 is a wasteful number, since it uses less digits than its factorization.

54976136209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276262190.

The product of its (nonzero) digits is 2449440, while the sum is 52.

The spelling of 54976136209 in words is "fifty-four billion, nine hundred seventy-six million, one hundred thirty-six thousand, two hundred nine".