16619890724911 has 2 divisors, whose sum is σ = 16619890724912. Its totient is φ = 16619890724910.

The previous prime is 16619890724893. The next prime is 16619890724923. The reversal of 16619890724911 is 11942709891661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16619890724911 - 2²⁷ = 16619756507183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16619890724971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8309945362455 + 8309945362456.

It is an arithmetic number, because the mean of its divisors is an integer number (8309945362456).

Almost surely, 2^{16619890724911} is an apocalyptic number.

16619890724911 is a deficient number, since it is larger than the sum of its proper divisors (1).

16619890724911 is an equidigital number, since it uses as much as digits as its factorization.

16619890724911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11757312, while the sum is 64.

The spelling of 16619890724911 in words is "sixteen trillion, six hundred nineteen billion, eight hundred ninety million, seven hundred twenty-four thousand, nine hundred eleven".