1355997984009 has 16 divisors (see below), whose sum is σ = 1810189923264. Its totient is φ = 902902694400.

The previous prime is 1355997983929. The next prime is 1355997984037. The reversal of 1355997984009 is 9004897995531.

It is not a de Polignac number, because 1355997984009 - 2²¹ = 1355995886857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1355997984079) 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 in 15 ways as a sum of consecutive naturals, for example, 17091777 + ... + 17170929.

It is an arithmetic number, because the mean of its divisors is an integer number (113136870204).

Almost surely, 2^{1355997984009} is an apocalyptic number.

It is an amenable number.

1355997984009 is a deficient number, since it is larger than the sum of its proper divisors (454191939255).

1355997984009 is an equidigital number, since it uses as much as digits as its factorization.

1355997984009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86008.

The product of its (nonzero) digits is 110224800, while the sum is 69.

The spelling of 1355997984009 in words is "one trillion, three hundred fifty-five billion, nine hundred ninety-seven million, nine hundred eighty-four thousand, nine".