21332600623 has 2 divisors, whose sum is σ = 21332600624. Its totient is φ = 21332600622.

The previous prime is 21332600561. The next prime is 21332600657. The reversal of 21332600623 is 32600623312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21332600623 - 2¹⁷ = 21332469551 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21332600591 and 21332600600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21332606623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10666300311 + 10666300312.

It is an arithmetic number, because the mean of its divisors is an integer number (10666300312).

Almost surely, 2^21332600623 is an apocalyptic number.

21332600623 is a deficient number, since it is larger than the sum of its proper divisors (1).

21332600623 is an equidigital number, since it uses as much as digits as its factorization.

21332600623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 28.

The spelling of 21332600623 in words is "twenty-one billion, three hundred thirty-two million, six hundred thousand, six hundred twenty-three".