16501420027 has 2 divisors, whose sum is σ = 16501420028. Its totient is φ = 16501420026.

The previous prime is 16501420003. The next prime is 16501420049. The reversal of 16501420027 is 72002410561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16501420027 - 2¹⁹ = 16500895739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16501419977 and 16501420004.

It is not a weakly prime, because it can be changed into another prime (16501430027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8250710013 + 8250710014.

It is an arithmetic number, because the mean of its divisors is an integer number (8250710014).

Almost surely, 2^16501420027 is an apocalyptic number.

16501420027 is a deficient number, since it is larger than the sum of its proper divisors (1).

16501420027 is an equidigital number, since it uses as much as digits as its factorization.

16501420027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 28.

Adding to 16501420027 its reverse (72002410561), we get a palindrome (88503830588).

The spelling of 16501420027 in words is "sixteen billion, five hundred one million, four hundred twenty thousand, twenty-seven".