54865656845 has 4 divisors (see below), whose sum is σ = 65838788220. Its totient is φ = 43892525472.

The previous prime is 54865656841. The next prime is 54865656863.

It is a happy number.

54865656845 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36067327396 + 18798329449 = 189914^2 + 137107^2 .

It is a cyclic number.

It is not a de Polignac number, because 54865656845 - 2² = 54865656841 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54865656841) 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, 5486565680 + ... + 5486565689.

It is an arithmetic number, because the mean of its divisors is an integer number (16459697055).

Almost surely, 2^54865656845 is an apocalyptic number.

It is an amenable number.

54865656845 is a deficient number, since it is larger than the sum of its proper divisors (10973131375).

54865656845 is a wasteful number, since it uses less digits than its factorization.

54865656845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10973131374.

The product of its digits is 138240000, while the sum is 62.

The spelling of 54865656845 in words is "fifty-four billion, eight hundred sixty-five million, six hundred fifty-six thousand, eight hundred forty-five".