54866888866845 has 48 divisors (see below), whose sum is σ = 103768437344832. Its totient is φ = 26596964244480.

The previous prime is 54866888866793. The next prime is 54866888866859.

54866888866845 is a `hidden beast` number, since 5 + 486 + 6 + 8 + 8 + 8 + 86 + 6 + 8 + 45 = 666.

54866888866845 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 54866888866845 - 2¹⁰ = 54866888865821 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8204379 + ... + 13305848.

It is an arithmetic number, because the mean of its divisors is an integer number (2161842444684).

Almost surely, 2^{54866888866845} is an apocalyptic number.

54866888866845 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

54866888866845 is a deficient number, since it is larger than the sum of its proper divisors (48901548477987).

54866888866845 is a wasteful number, since it uses less digits than its factorization.

54866888866845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21515402 (or 21515399 counting only the distinct ones).

The product of its digits is 135895449600, while the sum is 90.

The spelling of 54866888866845 in words is "fifty-four trillion, eight hundred sixty-six billion, eight hundred eighty-eight million, eight hundred sixty-six thousand, eight hundred forty-five".