2111996071744 has 168 divisors, whose sum is σ = 4687025484960. Its totient is φ = 943091914752.

The previous prime is 2111996071741. The next prime is 2111996071807. The reversal of 2111996071744 is 4471706991112.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a junction number, because it is equal to n+sod(n) for n = 2111996071691 and 2111996071700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111996071741) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71619627 + ... + 71649109.

It is an arithmetic number, because the mean of its divisors is an integer number (27898961220).

Almost surely, 2^{2111996071744} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2111996071744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2343512742480).

2111996071744 is an abundant number, since it is smaller than the sum of its proper divisors (2575029413216).

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

2111996071744 is a wasteful number, since it uses less digits than its factorization.

2111996071744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29737 (or 29714 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 52.

The spelling of 2111996071744 in words is "two trillion, one hundred eleven billion, nine hundred ninety-six million, seventy-one thousand, seven hundred forty-four".