20440103351 has 2 divisors, whose sum is σ = 20440103352. Its totient is φ = 20440103350.

The previous prime is 20440103291. The next prime is 20440103353. The reversal of 20440103351 is 15330104402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20440103351 - 2¹⁴ = 20440086967 is a prime.

It is a super-2 number, since 2×20440103351² (a number of 21 digits) contains 22 as substring.

Together with 20440103353, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20440103353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10220051675 + 10220051676.

It is an arithmetic number, because the mean of its divisors is an integer number (10220051676).

Almost surely, 2^20440103351 is an apocalyptic number.

20440103351 is a deficient number, since it is larger than the sum of its proper divisors (1).

20440103351 is an equidigital number, since it uses as much as digits as its factorization.

20440103351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 20440103351 its reverse (15330104402), we get a palindrome (35770207753).

The spelling of 20440103351 in words is "twenty billion, four hundred forty million, one hundred three thousand, three hundred fifty-one".