551560511609 has 12 divisors (see below), whose sum is σ = 616751334000. Its totient is φ = 491793887808.

The previous prime is 551560511599. The next prime is 551560511617. The reversal of 551560511609 is 906115065155.

It is not a de Polignac number, because 551560511609 - 2²⁴ = 551543734393 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 551560511609.

It is not an unprimeable number, because it can be changed into a prime (551560511209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50218559 + ... + 50229540.

It is an arithmetic number, because the mean of its divisors is an integer number (51395944500).

Almost surely, 2^551560511609 is an apocalyptic number.

It is an amenable number.

551560511609 is a deficient number, since it is larger than the sum of its proper divisors (65190822391).

551560511609 is a wasteful number, since it uses less digits than its factorization.

551560511609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100448152 (or 100448135 counting only the distinct ones).

The product of its (nonzero) digits is 202500, while the sum is 44.

The spelling of 551560511609 in words is "five hundred fifty-one billion, five hundred sixty million, five hundred eleven thousand, six hundred nine".