20723222503 has 2 divisors, whose sum is σ = 20723222504. Its totient is φ = 20723222502.

The previous prime is 20723222431. The next prime is 20723222561. The reversal of 20723222503 is 30522232702.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20723222503 - 2²¹ = 20721125351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20723222903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10361611251 + 10361611252.

It is an arithmetic number, because the mean of its divisors is an integer number (10361611252).

Almost surely, 2^20723222503 is an apocalyptic number.

20723222503 is a deficient number, since it is larger than the sum of its proper divisors (1).

20723222503 is an equidigital number, since it uses as much as digits as its factorization.

20723222503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 28.

The spelling of 20723222503 in words is "twenty billion, seven hundred twenty-three million, two hundred twenty-two thousand, five hundred three".