43953424856 has 64 divisors (see below), whose sum is σ = 93856942080. Its totient is φ = 19101364480.

The previous prime is 43953424849. The next prime is 43953424861. The reversal of 43953424856 is 65842435934.

It is a happy number.

It is a super-3 number, since 3×43953424856³ (a number of 33 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43953424798 and 43953424807.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6406580 + ... + 6413436.

It is an arithmetic number, because the mean of its divisors is an integer number (1466514720).

Almost surely, 2^43953424856 is an apocalyptic number.

43953424856 is a gapful number since it is divisible by the number (46) 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 43953424856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46928471040).

43953424856 is an abundant number, since it is smaller than the sum of its proper divisors (49903517224).

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

43953424856 is a wasteful number, since it uses less digits than its factorization.

43953424856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10064 (or 10060 counting only the distinct ones).

The product of its digits is 12441600, while the sum is 53.

The spelling of 43953424856 in words is "forty-three billion, nine hundred fifty-three million, four hundred twenty-four thousand, eight hundred fifty-six".