20623639033 has 2 divisors, whose sum is σ = 20623639034. Its totient is φ = 20623639032.

The previous prime is 20623639027. The next prime is 20623639039. The reversal of 20623639033 is 33093632602.

It is a balanced prime because it is at equal distance from previous prime (20623639027) and next prime (20623639039).

It can be written as a sum of positive squares in only one way, i.e., 11545932304 + 9077706729 = 107452^2 + 95277^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20623639033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20623638983 and 20623639001.

It is not a weakly prime, because it can be changed into another prime (20623639039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10311819516 + 10311819517.

It is an arithmetic number, because the mean of its divisors is an integer number (10311819517).

Almost surely, 2^20623639033 is an apocalyptic number.

It is an amenable number.

20623639033 is a deficient number, since it is larger than the sum of its proper divisors (1).

20623639033 is an equidigital number, since it uses as much as digits as its factorization.

20623639033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 37.

The spelling of 20623639033 in words is "twenty billion, six hundred twenty-three million, six hundred thirty-nine thousand, thirty-three".