16619966470831 has 2 divisors, whose sum is σ = 16619966470832. Its totient is φ = 16619966470830.

The previous prime is 16619966470799. The next prime is 16619966470867. The reversal of 16619966470831 is 13807466991661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16619966470831 - 2⁵ = 16619966470799 is a prime.

It is a super-2 number, since 2×16619966470831² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16619966470231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8309983235415 + 8309983235416.

It is an arithmetic number, because the mean of its divisors is an integer number (8309983235416).

Almost surely, 2^{16619966470831} is an apocalyptic number.

16619966470831 is a deficient number, since it is larger than the sum of its proper divisors (1).

16619966470831 is an equidigital number, since it uses as much as digits as its factorization.

16619966470831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70543872, while the sum is 67.

The spelling of 16619966470831 in words is "sixteen trillion, six hundred nineteen billion, nine hundred sixty-six million, four hundred seventy thousand, eight hundred thirty-one".