551554243645 has 8 divisors (see below), whose sum is σ = 662328916704. Its totient is φ = 440934178704.

The previous prime is 551554243619. The next prime is 551554243663. The reversal of 551554243645 is 546342455155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 551554243645 - 2⁹ = 551554243133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 38644179 + ... + 38658448.

It is an arithmetic number, because the mean of its divisors is an integer number (82791114588).

Almost surely, 2^551554243645 is an apocalyptic number.

It is an amenable number.

551554243645 is a deficient number, since it is larger than the sum of its proper divisors (110774673059).

551554243645 is a wasteful number, since it uses less digits than its factorization.

551554243645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77304059.

The product of its digits is 7200000, while the sum is 49.

The spelling of 551554243645 in words is "five hundred fifty-one billion, five hundred fifty-four million, two hundred forty-three thousand, six hundred forty-five".