43453402550 has 24 divisors (see below), whose sum is σ = 80829866736. Its totient is φ = 17379955040.

The previous prime is 43453402547. The next prime is 43453402561. The reversal of 43453402550 is 5520435434.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 43453402550.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 773204 + ... + 827496.

It is an arithmetic number, because the mean of its divisors is an integer number (3367911114).

Almost surely, 2^43453402550 is an apocalyptic number.

43453402550 is a deficient number, since it is larger than the sum of its proper divisors (37376464186).

43453402550 is a wasteful number, since it uses less digits than its factorization.

43453402550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70312 (or 70307 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 35.

Adding to 43453402550 its reverse (5520435434), we get a palindrome (48973837984).

The spelling of 43453402550 in words is "forty-three billion, four hundred fifty-three million, four hundred two thousand, five hundred fifty".