54878617205864 has 32 divisors (see below), whose sum is σ = 104126055789600. Its totient is φ = 27112987467840.

The previous prime is 54878617205861. The next prime is 54878617205917. The reversal of 54878617205864 is 46850271687845.

It is not an unprimeable number, because it can be changed into a prime (54878617205861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82071302 + ... + 82737269.

It is an arithmetic number, because the mean of its divisors is an integer number (3253939243425).

Almost surely, 2^{54878617205864} is an apocalyptic number.

It is an amenable number.

54878617205864 is a deficient number, since it is larger than the sum of its proper divisors (49247438583736).

54878617205864 is a wasteful number, since it uses less digits than its factorization.

54878617205864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164809073 (or 164809069 counting only the distinct ones).

The product of its (nonzero) digits is 722534400, while the sum is 71.

The spelling of 54878617205864 in words is "fifty-four trillion, eight hundred seventy-eight billion, six hundred seventeen million, two hundred five thousand, eight hundred sixty-four".