54684371665 has 80 divisors (see below), whose sum is σ = 88429138560. Its totient is φ = 32082408960.

The previous prime is 54684371629. The next prime is 54684371689. The reversal of 54684371665 is 56617348645.

It is a happy number.

It is not a de Polignac number, because 54684371665 - 2⁷ = 54684371537 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2232756 + ... + 2257114.

It is an arithmetic number, because the mean of its divisors is an integer number (1105364232).

Almost surely, 2^54684371665 is an apocalyptic number.

54684371665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

54684371665 is a deficient number, since it is larger than the sum of its proper divisors (33744766895).

54684371665 is a wasteful number, since it uses less digits than its factorization.

54684371665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24420 (or 24399 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 55.

The spelling of 54684371665 in words is "fifty-four billion, six hundred eighty-four million, three hundred seventy-one thousand, six hundred sixty-five".