56916122040 has 192 divisors, whose sum is σ = 193851021600. Its totient is φ = 14854081536.

The previous prime is 56916122033. The next prime is 56916122063. The reversal of 56916122040 is 4022161965.

It is a Cunningham number, because it is equal to 238571²-1.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 56916121986 and 56916122004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2373792 + ... + 2397648.

Almost surely, 2^56916122040 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 56916122040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96925510800).

56916122040 is an abundant number, since it is smaller than the sum of its proper divisors (136934899560).

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

56916122040 is a wasteful number, since it uses less digits than its factorization.

56916122040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23971 (or 23914 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 56916122040 in words is "fifty-six billion, nine hundred sixteen million, one hundred twenty-two thousand, forty".