54821931065 has 8 divisors (see below), whose sum is σ = 71766891648. Its totient is φ = 39870495280.

The previous prime is 54821931023. The next prime is 54821931077. The reversal of 54821931065 is 56013912845.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 54821931065 - 2¹⁴ = 54821914681 is a prime.

It is a super-2 number, since 2×54821931065² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 498381137 + ... + 498381246.

It is an arithmetic number, because the mean of its divisors is an integer number (8970861456).

Almost surely, 2^54821931065 is an apocalyptic number.

54821931065 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

54821931065 is a deficient number, since it is larger than the sum of its proper divisors (16944960583).

54821931065 is a wasteful number, since it uses less digits than its factorization.

54821931065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996762399.

The product of its (nonzero) digits is 259200, while the sum is 44.

The spelling of 54821931065 in words is "fifty-four billion, eight hundred twenty-one million, nine hundred thirty-one thousand, sixty-five".