551665542351 has 64 divisors (see below), whose sum is σ = 942350893056. Its totient is φ = 278682768000.

The previous prime is 551665542287. The next prime is 551665542409. The reversal of 551665542351 is 153245566155.

It is not a de Polignac number, because 551665542351 - 2⁶ = 551665542287 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 551665542351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551665542251) 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 in 63 ways as a sum of consecutive naturals, for example, 16658656 + ... + 16691738.

It is an arithmetic number, because the mean of its divisors is an integer number (14724232704).

Almost surely, 2^551665542351 is an apocalyptic number.

551665542351 is a deficient number, since it is larger than the sum of its proper divisors (390685350705).

551665542351 is a wasteful number, since it uses less digits than its factorization.

551665542351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35092.

The product of its digits is 2700000, while the sum is 48.

The spelling of 551665542351 in words is "five hundred fifty-one billion, six hundred sixty-five million, five hundred forty-two thousand, three hundred fifty-one".