16662514651 has 2 divisors, whose sum is σ = 16662514652. Its totient is φ = 16662514650.

The previous prime is 16662514643. The next prime is 16662514667. The reversal of 16662514651 is 15641526661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16662514651 - 2³ = 16662514643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16662514598 and 16662514607.

It is not a weakly prime, because it can be changed into another prime (16662518651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8331257325 + 8331257326.

It is an arithmetic number, because the mean of its divisors is an integer number (8331257326).

Almost surely, 2^16662514651 is an apocalyptic number.

16662514651 is a deficient number, since it is larger than the sum of its proper divisors (1).

16662514651 is an equidigital number, since it uses as much as digits as its factorization.

16662514651 is an evil number, because the sum of its binary digits is even.

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

The spelling of 16662514651 in words is "sixteen billion, six hundred sixty-two million, five hundred fourteen thousand, six hundred fifty-one".