43420351086 has 144 divisors (see below), whose sum is σ = 111996518400. Its totient is φ = 12118359456.

The previous prime is 43420351043. The next prime is 43420351087. The reversal of 43420351086 is 68015302434.

43420351086 is a `hidden beast` number, since 43 + 4 + 20 + 3 + 510 + 86 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 43420351086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43420351087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 8479635 + ... + 8484753.

It is an arithmetic number, because the mean of its divisors is an integer number (777753600).

Almost surely, 2^43420351086 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43420351086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55998259200).

43420351086 is an abundant number, since it is smaller than the sum of its proper divisors (68576167314).

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

43420351086 is a wasteful number, since it uses less digits than its factorization.

43420351086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5363 (or 5353 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 43420351086 in words is "forty-three billion, four hundred twenty million, three hundred fifty-one thousand, eighty-six".