16987654061 has 4 divisors (see below), whose sum is σ = 19414461792. Its totient is φ = 14560846332.

The previous prime is 16987654037. The next prime is 16987654081. The reversal of 16987654061 is 16045678961.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16987654061 - 2¹⁰ = 16987653037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16987653994 and 16987654012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16987654081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1213403855 + ... + 1213403868.

It is an arithmetic number, because the mean of its divisors is an integer number (4853615448).

Almost surely, 2^16987654061 is an apocalyptic number.

It is an amenable number.

16987654061 is a deficient number, since it is larger than the sum of its proper divisors (2426807731).

16987654061 is an equidigital number, since it uses as much as digits as its factorization.

16987654061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2426807730.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The spelling of 16987654061 in words is "sixteen billion, nine hundred eighty-seven million, six hundred fifty-four thousand, sixty-one".