43023220251 has 16 divisors (see below), whose sum is σ = 64737135360. Its totient is φ = 25175551520.

The previous prime is 43023220249. The next prime is 43023220267. The reversal of 43023220251 is 15202232034.

It is a cyclic number.

It is not a de Polignac number, because 43023220251 - 2¹ = 43023220249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43023220211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22477215 + ... + 22479128.

It is an arithmetic number, because the mean of its divisors is an integer number (4046070960).

Almost surely, 2^43023220251 is an apocalyptic number.

43023220251 is a deficient number, since it is larger than the sum of its proper divisors (21713915109).

43023220251 is a wasteful number, since it uses less digits than its factorization.

43023220251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44956386.

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 43023220251 its reverse (15202232034), we get a palindrome (58225452285).

The spelling of 43023220251 in words is "forty-three billion, twenty-three million, two hundred twenty thousand, two hundred fifty-one".