1611021885119 has 4 divisors (see below), whose sum is σ = 1611035280240. Its totient is φ = 1611008490000.

The previous prime is 1611021885107. The next prime is 1611021885149. The reversal of 1611021885119 is 9115881201161.

It is a happy number.

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 1611021885119 - 2⁸ = 1611021884863 is a prime.

It is a super-2 number, since 2×1611021885119² (a number of 25 digits) contains 22 as substring.

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 1611021885119.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1611021885149) 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, 6515507 + ... + 6758244.

It is an arithmetic number, because the mean of its divisors is an integer number (402758820060).

Almost surely, 2^{1611021885119} is an apocalyptic number.

1611021885119 is a deficient number, since it is larger than the sum of its proper divisors (13395121).

1611021885119 is a wasteful number, since it uses less digits than its factorization.

1611021885119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13395120.

The product of its (nonzero) digits is 34560, while the sum is 44.

The spelling of 1611021885119 in words is "one trillion, six hundred eleven billion, twenty-one million, eight hundred eighty-five thousand, one hundred nineteen".