43426623240 has 768 divisors, whose sum is σ = 194679313920. Its totient is φ = 8101969920.

The previous prime is 43426623239. The next prime is 43426623241. The reversal of 43426623240 is 4232662434.

43426623240 is a `hidden beast` number, since 4 + 3 + 4 + 2 + 6 + 623 + 24 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (43426623239) and next prime (43426623241).

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 = 43426623195 and 43426623204.

It is not an unprimeable number, because it can be changed into a prime (43426623241) by changing a digit.

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 191 ways as a sum of consecutive naturals, for example, 13331692 + ... + 13334948.

It is an arithmetic number, because the mean of its divisors is an integer number (253488690).

Almost surely, 2^43426623240 is an apocalyptic number.

43426623240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43426623240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97339656960).

43426623240 is an abundant number, since it is smaller than the sum of its proper divisors (151252690680).

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

43426623240 is a wasteful number, since it uses less digits than its factorization.

43426623240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3342 (or 3335 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 36.

It can be divided in two parts, 43426 and 623240, that added together give a palindrome (666666).

The spelling of 43426623240 in words is "forty-three billion, four hundred twenty-six million, six hundred twenty-three thousand, two hundred forty".