43319113728 has 96 divisors (see below), whose sum is σ = 125988670080. Its totient is φ = 13126983680.

The previous prime is 43319113711. The next prime is 43319113763. The reversal of 43319113728 is 82731191334.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×43319113728² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 43319113728.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252900 + ... + 388067.

It is an arithmetic number, because the mean of its divisors is an integer number (1312381980).

Almost surely, 2^43319113728 is an apocalyptic number.

43319113728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

43319113728 is an abundant number, since it is smaller than the sum of its proper divisors (82669556352).

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

43319113728 is a wasteful number, since it uses less digits than its factorization.

43319113728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641003 (or 640983 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The spelling of 43319113728 in words is "forty-three billion, three hundred nineteen million, one hundred thirteen thousand, seven hundred twenty-eight".