427501553551 has 2 divisors, whose sum is σ = 427501553552. Its totient is φ = 427501553550.

The previous prime is 427501553543. The next prime is 427501553581. The reversal of 427501553551 is 155355105724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 427501553551 - 2³ = 427501553543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 427501553498 and 427501553507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427501553581) 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, 213750776775 + 213750776776.

It is an arithmetic number, because the mean of its divisors is an integer number (213750776776).

Almost surely, 2^427501553551 is an apocalyptic number.

427501553551 is a deficient number, since it is larger than the sum of its proper divisors (1).

427501553551 is an equidigital number, since it uses as much as digits as its factorization.

427501553551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 525000, while the sum is 43.

The spelling of 427501553551 in words is "four hundred twenty-seven billion, five hundred one million, five hundred fifty-three thousand, five hundred fifty-one".