55533140647 has 2 divisors, whose sum is σ = 55533140648. Its totient is φ = 55533140646.

The previous prime is 55533140639. The next prime is 55533140737. The reversal of 55533140647 is 74604133555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55533140647 - 2³ = 55533140639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55533149647) by changing a digit.

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 as a sum of consecutive naturals, namely, 27766570323 + 27766570324.

It is an arithmetic number, because the mean of its divisors is an integer number (27766570324).

Almost surely, 2^55533140647 is an apocalyptic number.

55533140647 is a deficient number, since it is larger than the sum of its proper divisors (1).

55533140647 is an equidigital number, since it uses as much as digits as its factorization.

55533140647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756000, while the sum is 43.

The spelling of 55533140647 in words is "fifty-five billion, five hundred thirty-three million, one hundred forty thousand, six hundred forty-seven".