43421907587 has 8 divisors (see below), whose sum is σ = 43563744432. Its totient is φ = 43280288800.

The previous prime is 43421907559. The next prime is 43421907601. The reversal of 43421907587 is 78570912434.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43421907587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43421907527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349253 + ... + 456969.

It is an arithmetic number, because the mean of its divisors is an integer number (5445468054).

Almost surely, 2^43421907587 is an apocalyptic number.

43421907587 is a deficient number, since it is larger than the sum of its proper divisors (141836845).

43421907587 is a wasteful number, since it uses less digits than its factorization.

43421907587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109029.

The product of its (nonzero) digits is 1693440, while the sum is 50.

The spelling of 43421907587 in words is "forty-three billion, four hundred twenty-one million, nine hundred seven thousand, five hundred eighty-seven".