43156385408 has 48 divisors (see below), whose sum is σ = 87422232930. Its totient is φ = 21215424000.

The previous prime is 43156385407. The next prime is 43156385411. The reversal of 43156385408 is 80458365134.

It can be written as a sum of positive squares in only one way, i.e., 42802644544 + 353740864 = 206888^2 + 18808^2 .

It is not an unprimeable number, because it can be changed into a prime (43156385407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18355433 + ... + 18357783.

Almost surely, 2^43156385408 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 43156385408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43711116465).

43156385408 is an abundant number, since it is smaller than the sum of its proper divisors (44265847522).

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

43156385408 is an frugal number, since it uses more digits than its factorization.

43156385408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4777 (or 2414 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 47.

The spelling of 43156385408 in words is "forty-three billion, one hundred fifty-six million, three hundred eighty-five thousand, four hundred eight".