56216121024 has 168 divisors, whose sum is σ = 173983515888. Its totient is φ = 15972526080.

The previous prime is 56216121019. The next prime is 56216121083. The reversal of 56216121024 is 42012161265.

It is a tau number, because it is divible by the number of its divisors (168).

It is a junction number, because it is equal to n+sod(n) for n = 56216120982 and 56216121000.

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, 1686342 + ... + 1719354.

It is an arithmetic number, because the mean of its divisors is an integer number (1035616166).

Almost surely, 2^56216121024 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 56216121024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86991757944).

56216121024 is an abundant number, since it is smaller than the sum of its proper divisors (117767394864).

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

56216121024 is a wasteful number, since it uses less digits than its factorization.

56216121024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33223 (or 33206 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 56216121024 its reverse (42012161265), we get a palindrome (98228282289).

The spelling of 56216121024 in words is "fifty-six billion, two hundred sixteen million, one hundred twenty-one thousand, twenty-four".