2116543511400 has 192 divisors, whose sum is σ = 6635796948480. Its totient is φ = 558014054400.

The previous prime is 2116543511389. The next prime is 2116543511437. The reversal of 2116543511400 is 41153456112.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 57657852 + ... + 57694548.

It is an arithmetic number, because the mean of its divisors is an integer number (34561442440).

Almost surely, 2^{2116543511400} is an apocalyptic number.

2116543511400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2116543511400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3317898474240).

2116543511400 is an abundant number, since it is smaller than the sum of its proper divisors (4519253437080).

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

2116543511400 is a wasteful number, since it uses less digits than its factorization.

2116543511400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37804 (or 37795 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

Adding to 2116543511400 its reverse (41153456112), we get a palindrome (2157696967512).

The spelling of 2116543511400 in words is "two trillion, one hundred sixteen billion, five hundred forty-three million, five hundred eleven thousand, four hundred".