84216430378123 has 2 divisors, whose sum is σ = 84216430378124. Its totient is φ = 84216430378122.

The previous prime is 84216430378061. The next prime is 84216430378159. The reversal of 84216430378123 is 32187303461248.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84216430378123 is a prime.

It is not a weakly prime, because it can be changed into another prime (84216430378723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42108215189061 + 42108215189062.

It is an arithmetic number, because the mean of its divisors is an integer number (42108215189062).

Almost surely, 2^{84216430378123} is an apocalyptic number.

84216430378123 is a deficient number, since it is larger than the sum of its proper divisors (1).

84216430378123 is an equidigital number, since it uses as much as digits as its factorization.

84216430378123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4644864, while the sum is 52.

The spelling of 84216430378123 in words is "eighty-four trillion, two hundred sixteen billion, four hundred thirty million, three hundred seventy-eight thousand, one hundred twenty-three".