16431133119551 has 2 divisors, whose sum is σ = 16431133119552. Its totient is φ = 16431133119550.

The previous prime is 16431133119509. The next prime is 16431133119571. The reversal of 16431133119551 is 15591133113461.

It is a strong prime.

It is an emirp because it is prime and its reverse (15591133113461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16431133119551 - 2¹⁸ = 16431132857407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16431133119571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8215566559775 + 8215566559776.

It is an arithmetic number, because the mean of its divisors is an integer number (8215566559776).

Almost surely, 2^{16431133119551} is an apocalyptic number.

16431133119551 is a deficient number, since it is larger than the sum of its proper divisors (1).

16431133119551 is an equidigital number, since it uses as much as digits as its factorization.

16431133119551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145800, while the sum is 44.

The spelling of 16431133119551 in words is "sixteen trillion, four hundred thirty-one billion, one hundred thirty-three million, one hundred nineteen thousand, five hundred fifty-one".