16919400727 has 2 divisors, whose sum is σ = 16919400728. Its totient is φ = 16919400726.

The previous prime is 16919400697. The next prime is 16919400731. The reversal of 16919400727 is 72700491961.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16919400727 - 2¹¹ = 16919398679 is a prime.

It is a super-2 number, since 2×16919400727² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16919406727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8459700363 + 8459700364.

It is an arithmetic number, because the mean of its divisors is an integer number (8459700364).

Almost surely, 2^16919400727 is an apocalyptic number.

16919400727 is a deficient number, since it is larger than the sum of its proper divisors (1).

16919400727 is an equidigital number, since it uses as much as digits as its factorization.

16919400727 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 46.

The spelling of 16919400727 in words is "sixteen billion, nine hundred nineteen million, four hundred thousand, seven hundred twenty-seven".