43156385409 has 32 divisors (see below), whose sum is σ = 62262892800. Its totient is φ = 26507416320.

The previous prime is 43156385407. The next prime is 43156385411. The reversal of 43156385409 is 90458365134.

It is an interprime number because it is at equal distance from previous prime (43156385407) and next prime (43156385411).

It is not a de Polignac number, because 43156385409 - 2¹ = 43156385407 is a prime.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 816807 + ... + 868035.

It is an arithmetic number, because the mean of its divisors is an integer number (1945715400).

Almost surely, 2^43156385409 is an apocalyptic number.

It is an amenable number.

43156385409 is a deficient number, since it is larger than the sum of its proper divisors (19106507391).

43156385409 is a wasteful number, since it uses less digits than its factorization.

43156385409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51705.

The product of its (nonzero) digits is 1555200, while the sum is 48.

The spelling of 43156385409 in words is "forty-three billion, one hundred fifty-six million, three hundred eighty-five thousand, four hundred nine".