1005406655613 has 8 divisors (see below), whose sum is σ = 1340570599968. Its totient is φ = 670256907504.

The previous prime is 1005406655597. The next prime is 1005406655621. The reversal of 1005406655613 is 3165566045001.

1005406655613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1005406655613 - 2⁴ = 1005406655597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005406654613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3382695 + ... + 3667892.

It is an arithmetic number, because the mean of its divisors is an integer number (167571324996).

Almost surely, 2^{1005406655613} is an apocalyptic number.

It is an amenable number.

1005406655613 is a deficient number, since it is larger than the sum of its proper divisors (335163944355).

1005406655613 is an equidigital number, since it uses as much as digits as its factorization.

1005406655613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7098123.

The product of its (nonzero) digits is 324000, while the sum is 42.

The spelling of 1005406655613 in words is "one trillion, five billion, four hundred six million, six hundred fifty-five thousand, six hundred thirteen".