54311866649 has 2 divisors, whose sum is σ = 54311866650. Its totient is φ = 54311866648.

The previous prime is 54311866639. The next prime is 54311866691. The reversal of 54311866649 is 94666811345.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52055616649 + 2256250000 = 228157^2 + 47500^2 .

It is a cyclic number.

It is not a de Polignac number, because 54311866649 - 2⁸ = 54311866393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54311866649.

It is not a weakly prime, because it can be changed into another prime (54311866639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27155933324 + 27155933325.

It is an arithmetic number, because the mean of its divisors is an integer number (27155933325).

Almost surely, 2^54311866649 is an apocalyptic number.

It is an amenable number.

54311866649 is a deficient number, since it is larger than the sum of its proper divisors (1).

54311866649 is an equidigital number, since it uses as much as digits as its factorization.

54311866649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3732480, while the sum is 53.

The spelling of 54311866649 in words is "fifty-four billion, three hundred eleven million, eight hundred sixty-six thousand, six hundred forty-nine".