551667278563 has 16 divisors (see below), whose sum is σ = 568680069600. Its totient is φ = 534949868800.

The previous prime is 551667278543. The next prime is 551667278597. The reversal of 551667278563 is 365872766155.

It is a cyclic number.

It is not a de Polignac number, because 551667278563 - 2²¹ = 551665181411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551667278543) 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 in 15 ways as a sum of consecutive naturals, for example, 1430895 + ... + 1775047.

It is an arithmetic number, because the mean of its divisors is an integer number (35542504350).

Almost surely, 2^551667278563 is an apocalyptic number.

551667278563 is a deficient number, since it is larger than the sum of its proper divisors (17012791037).

551667278563 is a wasteful number, since it uses less digits than its factorization.

551667278563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344582.

The product of its digits is 63504000, while the sum is 61.

The spelling of 551667278563 in words is "five hundred fifty-one billion, six hundred sixty-seven million, two hundred seventy-eight thousand, five hundred sixty-three".