43481057664 has 576 divisors, whose sum is σ = 139537162800. Its totient is φ = 11969126400.

The previous prime is 43481057657. The next prime is 43481057681. The reversal of 43481057664 is 46675018434.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 712804194 + ... + 712804254.

Almost surely, 2^43481057664 is an apocalyptic number.

43481057664 is a gapful number since it is divisible by the number (44) 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 43481057664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69768581400).

43481057664 is an abundant number, since it is smaller than the sum of its proper divisors (96056105136).

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

43481057664 is a wasteful number, since it uses less digits than its factorization.

43481057664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 48.

The spelling of 43481057664 in words is "forty-three billion, four hundred eighty-one million, fifty-seven thousand, six hundred sixty-four".