54661400563540 has 12 divisors (see below), whose sum is σ = 114788941183476. Its totient is φ = 21864560225408.

The previous prime is 54661400563499. The next prime is 54661400563571. The reversal of 54661400563540 is 4536500416645.

It can be written as a sum of positive squares in 2 ways, for example, as 40329028064196 + 14332372499344 = 6350514^2 + 3785812^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1366535014069 + ... + 1366535014108.

It is an arithmetic number, because the mean of its divisors is an integer number (9565745098623).

Almost surely, 2^{54661400563540} is an apocalyptic number.

It is an amenable number.

54661400563540 is an abundant number, since it is smaller than the sum of its proper divisors (60127540619936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54661400563540 is a wasteful number, since it uses less digits than its factorization.

54661400563540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2733070028186 (or 2733070028184 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 49.

The spelling of 54661400563540 in words is "fifty-four trillion, six hundred sixty-one billion, four hundred million, five hundred sixty-three thousand, five hundred forty".