43780045056 has 288 divisors, whose sum is σ = 135290953728. Its totient is φ = 12421201920.

The previous prime is 43780045033. The next prime is 43780045079. The reversal of 43780045056 is 65054008734.

It is an interprime number because it is at equal distance from previous prime (43780045033) and next prime (43780045079).

It is a junction number, because it is equal to n+sod(n) for n = 43780044999 and 43780045017.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32025685 + ... + 32027051.

It is an arithmetic number, because the mean of its divisors is an integer number (469760256).

Almost surely, 2^43780045056 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 43780045056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67645476864).

43780045056 is an abundant number, since it is smaller than the sum of its proper divisors (91510908672).

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

43780045056 is a wasteful number, since it uses less digits than its factorization.

43780045056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1637 (or 1623 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 42.

The spelling of 43780045056 in words is "forty-three billion, seven hundred eighty million, forty-five thousand, fifty-six".