5921015666688 has 288 divisors, whose sum is σ = 17847543102480. Its totient is φ = 1961074851840.

The previous prime is 5921015666627. The next prime is 5921015666717. The reversal of 5921015666688 is 8866665101295.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (288).

It is a super-2 number, since 2×5921015666688² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78095358 + ... + 78171138.

Almost surely, 2^{5921015666688} 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 5921015666688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8923771551240).

5921015666688 is an abundant number, since it is smaller than the sum of its proper divisors (11926527435792).

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

5921015666688 is an equidigital number, since it uses as much as digits as its factorization.

5921015666688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75975 (or 75943 counting only the distinct ones).

The product of its (nonzero) digits is 37324800, while the sum is 63.

The spelling of 5921015666688 in words is "five trillion, nine hundred twenty-one billion, fifteen million, six hundred sixty-six thousand, six hundred eighty-eight".