1005253401011 has 4 divisors (see below), whose sum is σ = 1021732965024. Its totient is φ = 988773837000.

The previous prime is 1005253401001. The next prime is 1005253401023. The reversal of 1005253401011 is 1101043525001.

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 1005253401011 - 2³⁴ = 988073531827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1005253401001) 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, 8239781915 + ... + 8239782036.

It is an arithmetic number, because the mean of its divisors is an integer number (255433241256).

Almost surely, 2^{1005253401011} is an apocalyptic number.

1005253401011 is a deficient number, since it is larger than the sum of its proper divisors (16479564013).

1005253401011 is an equidigital number, since it uses as much as digits as its factorization.

1005253401011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16479564012.

The product of its (nonzero) digits is 600, while the sum is 23.

Adding to 1005253401011 its reverse (1101043525001), we get a palindrome (2106296926012).

The spelling of 1005253401011 in words is "one trillion, five billion, two hundred fifty-three million, four hundred one thousand, eleven".