43906136064 has 192 divisors, whose sum is σ = 134815000320. Its totient is φ = 12447252480.

The previous prime is 43906135963. The next prime is 43906136077. The reversal of 43906136064 is 46063160934.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5630152 + ... + 5637944.

It is an arithmetic number, because the mean of its divisors is an integer number (702161460).

Almost surely, 2^43906136064 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 43906136064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67407500160).

43906136064 is an abundant number, since it is smaller than the sum of its proper divisors (90908864256).

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

43906136064 is a wasteful number, since it uses less digits than its factorization.

43906136064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7956 (or 7936 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 42.

Adding to 43906136064 its reverse (46063160934), we get a palindrome (89969296998).

The spelling of 43906136064 in words is "forty-three billion, nine hundred six million, one hundred thirty-six thousand, sixty-four".