20351224443 has 8 divisors (see below), whose sum is σ = 29601781056. Its totient is φ = 12334075400.

The previous prime is 20351224423. The next prime is 20351224477. The reversal of 20351224443 is 34442215302.

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

It is a cyclic number.

It is not a de Polignac number, because 20351224443 - 2²⁴ = 20334447227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20351224443.

It is not an unprimeable number, because it can be changed into a prime (20351224423) 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, 308351853 + ... + 308351918.

It is an arithmetic number, because the mean of its divisors is an integer number (3700222632).

Almost surely, 2^20351224443 is an apocalyptic number.

20351224443 is a deficient number, since it is larger than the sum of its proper divisors (9250556613).

20351224443 is a wasteful number, since it uses less digits than its factorization.

20351224443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616703785.

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 20351224443 its reverse (34442215302), we get a palindrome (54793439745).

The spelling of 20351224443 in words is "twenty billion, three hundred fifty-one million, two hundred twenty-four thousand, four hundred forty-three".