1005551520223 has 2 divisors, whose sum is σ = 1005551520224. Its totient is φ = 1005551520222.

The previous prime is 1005551520187. The next prime is 1005551520247. The reversal of 1005551520223 is 3220251555001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1005551520223 - 2⁹ = 1005551519711 is a prime.

It is a super-2 number, since 2×1005551520223² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1005551520923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502775760111 + 502775760112.

It is an arithmetic number, because the mean of its divisors is an integer number (502775760112).

Almost surely, 2^{1005551520223} is an apocalyptic number.

1005551520223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1005551520223 is an equidigital number, since it uses as much as digits as its factorization.

1005551520223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15000, while the sum is 31.

The spelling of 1005551520223 in words is "one trillion, five billion, five hundred fifty-one million, five hundred twenty thousand, two hundred twenty-three".