20150223043 has 4 divisors (see below), whose sum is σ = 20150795800. Its totient is φ = 20149650288.

The previous prime is 20150223013. The next prime is 20150223047. The reversal of 20150223043 is 34032205102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20150223043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20150223047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229893 + ... + 305206.

It is an arithmetic number, because the mean of its divisors is an integer number (5037698950).

Almost surely, 2^20150223043 is an apocalyptic number.

20150223043 is a deficient number, since it is larger than the sum of its proper divisors (572757).

20150223043 is an equidigital number, since it uses as much as digits as its factorization.

20150223043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572756.

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 20150223043 its reverse (34032205102), we get a palindrome (54182428145).

The spelling of 20150223043 in words is "twenty billion, one hundred fifty million, two hundred twenty-three thousand, forty-three".