43581400013109 has 32 divisors (see below), whose sum is σ = 70317153976320. Its totient is φ = 23438420957952.

The previous prime is 43581400013101. The next prime is 43581400013141. The reversal of 43581400013109 is 90131000418534.

It is not a de Polignac number, because 43581400013109 - 2³ = 43581400013101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43581400013101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27092452 + ... + 28655954.

It is an arithmetic number, because the mean of its divisors is an integer number (2197411061760).

Almost surely, 2^{43581400013109} is an apocalyptic number.

It is an amenable number.

43581400013109 is a deficient number, since it is larger than the sum of its proper divisors (26735753963211).

43581400013109 is a wasteful number, since it uses less digits than its factorization.

43581400013109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641609.

The product of its (nonzero) digits is 51840, while the sum is 39.

The spelling of 43581400013109 in words is "forty-three trillion, five hundred eighty-one billion, four hundred million, thirteen thousand, one hundred nine".