5551553544665 has 8 divisors (see below), whose sum is σ = 6661951415880. Its totient is φ = 4441184727552.

The previous prime is 5551553544653. The next prime is 5551553544697. The reversal of 5551553544665 is 5664453551555.

It can be written as a sum of positive squares in 4 ways, for example, as 142826549776 + 5408726994889 = 377924^2 + 2325667^2 .

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 5551553544665 - 2⁸ = 5551553544409 is a prime.

It is a super-2 number, since 2×5551553544665² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6840920 + ... + 7609289.

It is an arithmetic number, because the mean of its divisors is an integer number (832743926985).

Almost surely, 2^{5551553544665} is an apocalyptic number.

It is an amenable number.

5551553544665 is a deficient number, since it is larger than the sum of its proper divisors (1110397871215).

5551553544665 is a wasteful number, since it uses less digits than its factorization.

5551553544665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14527051.

The product of its digits is 135000000, while the sum is 59.

The spelling of 5551553544665 in words is "five trillion, five hundred fifty-one billion, five hundred fifty-three million, five hundred forty-four thousand, six hundred sixty-five".