43625043440 has 40 divisors (see below), whose sum is σ = 110648976048. Its totient is φ = 15863651840.

The previous prime is 43625043421. The next prime is 43625043457. The reversal of 43625043440 is 4434052634.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 43625043440.

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, 24786077 + ... + 24787836.

Almost surely, 2^43625043440 is an apocalyptic number.

43625043440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43625043440 is an abundant number, since it is smaller than the sum of its proper divisors (67023932608).

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

43625043440 is a wasteful number, since it uses less digits than its factorization.

43625043440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49573937 (or 49573931 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 35.

The spelling of 43625043440 in words is "forty-three billion, six hundred twenty-five million, forty-three thousand, four hundred forty".