54400664485 has 16 divisors (see below), whose sum is σ = 66214249200. Its totient is φ = 42902286336.

The previous prime is 54400664467. The next prime is 54400664497. The reversal of 54400664485 is 58446600445.

It can be written as a sum of positive squares in 8 ways, for example, as 1672564609 + 52728099876 = 40897^2 + 229626^2 .

It is a cyclic number.

It is not a de Polignac number, because 54400664485 - 2⁵ = 54400664453 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145980 + ... + 360709.

It is an arithmetic number, because the mean of its divisors is an integer number (4138390575).

Almost surely, 2^54400664485 is an apocalyptic number.

It is an amenable number.

54400664485 is a deficient number, since it is larger than the sum of its proper divisors (11813584715).

54400664485 is a wasteful number, since it uses less digits than its factorization.

54400664485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507000.

The product of its (nonzero) digits is 1843200, while the sum is 46.

The spelling of 54400664485 in words is "fifty-four billion, four hundred million, six hundred sixty-four thousand, four hundred eighty-five".