2116610531456 has 32 divisors (see below), whose sum is σ = 4276074991680. Its totient is φ = 1043399553280.

The previous prime is 2116610531447. The next prime is 2116610531459. The reversal of 2116610531456 is 6541350166112.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (2116610531459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116441756 + ... + 116459931.

It is an arithmetic number, because the mean of its divisors is an integer number (133627343490).

Almost surely, 2^{2116610531456} is an apocalyptic number.

It is an amenable number.

2116610531456 is an abundant number, since it is smaller than the sum of its proper divisors (2159464460224).

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

2116610531456 is an equidigital number, since it uses as much as digits as its factorization.

2116610531456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232901772 (or 232901760 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 41.

Adding to 2116610531456 its reverse (6541350166112), we get a palindrome (8657960697568).

The spelling of 2116610531456 in words is "two trillion, one hundred sixteen billion, six hundred ten million, five hundred thirty-one thousand, four hundred fifty-six".