43421550355 has 16 divisors (see below), whose sum is σ = 54523839744. Its totient is φ = 33160682880.

The previous prime is 43421550343. The next prime is 43421550373. The reversal of 43421550355 is 55305512434.

It is not a de Polignac number, because 43421550355 - 2¹⁹ = 43421026067 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2204451 + ... + 2224060.

It is an arithmetic number, because the mean of its divisors is an integer number (3407739984).

Almost surely, 2^43421550355 is an apocalyptic number.

43421550355 is a deficient number, since it is larger than the sum of its proper divisors (11102289389).

43421550355 is a wasteful number, since it uses less digits than its factorization.

43421550355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4428606.

The product of its (nonzero) digits is 180000, while the sum is 37.

The spelling of 43421550355 in words is "forty-three billion, four hundred twenty-one million, five hundred fifty thousand, three hundred fifty-five".