43331261568 has 128 divisors (see below), whose sum is σ = 131798067840. Its totient is φ = 12356198400.

The previous prime is 43331261521. The next prime is 43331261581. The reversal of 43331261568 is 86516213334.

It is a tau number, because it is divible by the number of its divisors (128).

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1384978 + ... + 1415918.

It is an arithmetic number, because the mean of its divisors is an integer number (1029672405).

Almost surely, 2^43331261568 is an apocalyptic number.

43331261568 is a gapful number since it is divisible by the number (48) 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 43331261568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65899033920).

43331261568 is an abundant number, since it is smaller than the sum of its proper divisors (88466806272).

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

43331261568 is a wasteful number, since it uses less digits than its factorization.

43331261568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31486 (or 31474 counting only the distinct ones).

The product of its digits is 311040, while the sum is 42.

The spelling of 43331261568 in words is "forty-three billion, three hundred thirty-one million, two hundred sixty-one thousand, five hundred sixty-eight".