16420750831 has 2 divisors, whose sum is σ = 16420750832. Its totient is φ = 16420750830.

The previous prime is 16420750813. The next prime is 16420750837. The reversal of 16420750831 is 13805702461.

Together with previous prime (16420750813) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16420750831 - 2⁵ = 16420750799 is a prime.

It is a super-2 number, since 2×16420750831² (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 (16420750837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8210375415 + 8210375416.

It is an arithmetic number, because the mean of its divisors is an integer number (8210375416).

Almost surely, 2^16420750831 is an apocalyptic number.

16420750831 is a deficient number, since it is larger than the sum of its proper divisors (1).

16420750831 is an equidigital number, since it uses as much as digits as its factorization.

16420750831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 16420750831 in words is "sixteen billion, four hundred twenty million, seven hundred fifty thousand, eight hundred thirty-one".