16941947851 has 2 divisors, whose sum is σ = 16941947852. Its totient is φ = 16941947850.

The previous prime is 16941947849. The next prime is 16941947879. The reversal of 16941947851 is 15874914961.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16941947851 - 2¹ = 16941947849 is a prime.

Together with 16941947849, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 16941947792 and 16941947801.

It is not a weakly prime, because it can be changed into another prime (16941927851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8470973925 + 8470973926.

It is an arithmetic number, because the mean of its divisors is an integer number (8470973926).

Almost surely, 2^16941947851 is an apocalyptic number.

16941947851 is a deficient number, since it is larger than the sum of its proper divisors (1).

16941947851 is an equidigital number, since it uses as much as digits as its factorization.

16941947851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 55.

The spelling of 16941947851 in words is "sixteen billion, nine hundred forty-one million, nine hundred forty-seven thousand, eight hundred fifty-one".