20200056623 has 2 divisors, whose sum is σ = 20200056624. Its totient is φ = 20200056622.

The previous prime is 20200056593. The next prime is 20200056629. The reversal of 20200056623 is 32665000202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20200056623 - 2¹² = 20200052527 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20200056592 and 20200056601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20200056629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100028311 + 10100028312.

It is an arithmetic number, because the mean of its divisors is an integer number (10100028312).

Almost surely, 2^20200056623 is an apocalyptic number.

20200056623 is a deficient number, since it is larger than the sum of its proper divisors (1).

20200056623 is an equidigital number, since it uses as much as digits as its factorization.

20200056623 is an evil number, because the sum of its binary digits is even.

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

Adding to 20200056623 its reverse (32665000202), we get a palindrome (52865056825).

The spelling of 20200056623 in words is "twenty billion, two hundred million, fifty-six thousand, six hundred twenty-three".