1005054542551 has 4 divisors (see below), whose sum is σ = 1005509938752. Its totient is φ = 1004599146352.

The previous prime is 1005054542549. The next prime is 1005054542561. The reversal of 1005054542551 is 1552454505001.

1005054542551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1005054542551 - 2¹ = 1005054542549 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 1005054542551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005054542561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227694790 + ... + 227699203.

It is an arithmetic number, because the mean of its divisors is an integer number (251377484688).

Almost surely, 2^{1005054542551} is an apocalyptic number.

1005054542551 is a deficient number, since it is larger than the sum of its proper divisors (455396201).

1005054542551 is an equidigital number, since it uses as much as digits as its factorization.

1005054542551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455396200.

The product of its (nonzero) digits is 100000, while the sum is 37.

The spelling of 1005054542551 in words is "one trillion, five billion, fifty-four million, five hundred forty-two thousand, five hundred fifty-one".