16650610987 has 2 divisors, whose sum is σ = 16650610988. Its totient is φ = 16650610986.

The previous prime is 16650610897. The next prime is 16650611017. The reversal of 16650610987 is 78901605661.

It is a happy number.

Together with previous prime (16650610897) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16650610987 - 2⁷ = 16650610859 is a prime.

It is a super-2 number, since 2×16650610987² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16650610987.

It is not a weakly prime, because it can be changed into another prime (16650610187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8325305493 + 8325305494.

It is an arithmetic number, because the mean of its divisors is an integer number (8325305494).

Almost surely, 2^16650610987 is an apocalyptic number.

16650610987 is a deficient number, since it is larger than the sum of its proper divisors (1).

16650610987 is an equidigital number, since it uses as much as digits as its factorization.

16650610987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 49.

The spelling of 16650610987 in words is "sixteen billion, six hundred fifty million, six hundred ten thousand, nine hundred eighty-seven".