20102356403 has 2 divisors, whose sum is σ = 20102356404. Its totient is φ = 20102356402.

The previous prime is 20102356381. The next prime is 20102356411. The reversal of 20102356403 is 30465320102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20102356403 - 2³⁴ = 2922487219 is a prime.

It is not a weakly prime, because it can be changed into another prime (20102356433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051178201 + 10051178202.

It is an arithmetic number, because the mean of its divisors is an integer number (10051178202).

Almost surely, 2^20102356403 is an apocalyptic number.

20102356403 is a deficient number, since it is larger than the sum of its proper divisors (1).

20102356403 is an equidigital number, since it uses as much as digits as its factorization.

20102356403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 20102356403 its reverse (30465320102), we get a palindrome (50567676505).

The spelling of 20102356403 in words is "twenty billion, one hundred two million, three hundred fifty-six thousand, four hundred three".