16602538651 has 2 divisors, whose sum is σ = 16602538652. Its totient is φ = 16602538650.

The previous prime is 16602538649. The next prime is 16602538679. The reversal of 16602538651 is 15683520661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16602538651 - 2¹ = 16602538649 is a prime.

Together with 16602538649, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 16602538598 and 16602538607.

It is not a weakly prime, because it can be changed into another prime (16602598651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8301269325 + 8301269326.

It is an arithmetic number, because the mean of its divisors is an integer number (8301269326).

Almost surely, 2^16602538651 is an apocalyptic number.

16602538651 is a deficient number, since it is larger than the sum of its proper divisors (1).

16602538651 is an equidigital number, since it uses as much as digits as its factorization.

16602538651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 16602538651 in words is "sixteen billion, six hundred two million, five hundred thirty-eight thousand, six hundred fifty-one".