43149945507 has 8 divisors (see below), whose sum is σ = 57972446400. Its totient is φ = 28547037480.

The previous prime is 43149945499. The next prime is 43149945539. The reversal of 43149945507 is 70554994134.

It is a happy number.

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

It is not a de Polignac number, because 43149945507 - 2³ = 43149945499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43149945507.

It is not an unprimeable number, because it can be changed into a prime (43149945607) 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, 54897757 + ... + 54898542.

It is an arithmetic number, because the mean of its divisors is an integer number (7246555800).

Almost surely, 2^43149945507 is an apocalyptic number.

43149945507 is a deficient number, since it is larger than the sum of its proper divisors (14822500893).

43149945507 is a wasteful number, since it uses less digits than its factorization.

43149945507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109796433.

The product of its (nonzero) digits is 2721600, while the sum is 51.

The spelling of 43149945507 in words is "forty-three billion, one hundred forty-nine million, nine hundred forty-five thousand, five hundred seven".