43651420013256 has 128 divisors (see below), whose sum is σ = 119373695308800. Its totient is φ = 13191709351680.

The previous prime is 43651420013237. The next prime is 43651420013263. The reversal of 43651420013256 is 65231002415634.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148576855 + ... + 148870361.

It is an arithmetic number, because the mean of its divisors is an integer number (932606994600).

Almost surely, 2^{43651420013256} 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 43651420013256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59686847654400).

43651420013256 is an abundant number, since it is smaller than the sum of its proper divisors (75722275295544).

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

43651420013256 is a wasteful number, since it uses less digits than its factorization.

43651420013256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295059 (or 295055 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 43651420013256 in words is "forty-three trillion, six hundred fifty-one billion, four hundred twenty million, thirteen thousand, two hundred fifty-six".