43255106987 has 8 divisors (see below), whose sum is σ = 43575630912. Its totient is φ = 42935603200.

The previous prime is 43255106971. The next prime is 43255107019. The reversal of 43255106987 is 78960155234.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 43255106987 - 2⁴ = 43255106971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43255106927) 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, 169814 + ... + 339627.

It is an arithmetic number, because the mean of its divisors is an integer number (5446953864).

It is a 2-persistent number, because it is pandigital, and so is 2⋅43255106987 = 86510213974, but 3⋅43255106987 = 129765320961 is not.

Almost surely, 2^43255106987 is an apocalyptic number.

43255106987 is the 169814-th pentagonal number.

43255106987 is a deficient number, since it is larger than the sum of its proper divisors (320523925).

43255106987 is a wasteful number, since it uses less digits than its factorization.

43255106987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510069.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The spelling of 43255106987 in words is "forty-three billion, two hundred fifty-five million, one hundred six thousand, nine hundred eighty-seven".