1611423642012 has 12 divisors (see below), whose sum is σ = 3759988498056. Its totient is φ = 537141214000.

The previous prime is 1611423642011. The next prime is 1611423642013. The reversal of 1611423642012 is 2102463241161.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1611423642011) and next prime (1611423642013).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1611423642011) 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, 67142651739 + ... + 67142651762.

It is an arithmetic number, because the mean of its divisors is an integer number (313332374838).

Almost surely, 2^{1611423642012} is an apocalyptic number.

1611423642012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1611423642012 is an abundant number, since it is smaller than the sum of its proper divisors (2148564856044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1611423642012 is a wasteful number, since it uses less digits than its factorization.

1611423642012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134285303508 (or 134285303506 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

Adding to 1611423642012 its reverse (2102463241161), we get a palindrome (3713886883173).

The spelling of 1611423642012 in words is "one trillion, six hundred eleven billion, four hundred twenty-three million, six hundred forty-two thousand, twelve".