43566960640 has 416 divisors, whose sum is σ = 127084478976. Its totient is φ = 14014218240.

The previous prime is 43566960629. The next prime is 43566960649. The reversal of 43566960640 is 4606966534.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (43566960649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 240701350 + ... + 240701530.

It is an arithmetic number, because the mean of its divisors is an integer number (305491536).

Almost surely, 2^43566960640 is an apocalyptic number.

43566960640 is a gapful number since it is divisible by the number (40) 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 43566960640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63542239488).

43566960640 is an abundant number, since it is smaller than the sum of its proper divisors (83517518336).

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

43566960640 is a wasteful number, since it uses less digits than its factorization.

43566960640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 49.

The spelling of 43566960640 in words is "forty-three billion, five hundred sixty-six million, nine hundred sixty thousand, six hundred forty".