1623419998279 has 2 divisors, whose sum is σ = 1623419998280. Its totient is φ = 1623419998278.

The previous prime is 1623419998223. The next prime is 1623419998283. The reversal of 1623419998279 is 9728999143261.

It is a strong prime.

It is an emirp because it is prime and its reverse (9728999143261) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1623419998279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1623419998379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 811709999139 + 811709999140.

It is an arithmetic number, because the mean of its divisors is an integer number (811709999140).

Almost surely, 2^{1623419998279} is an apocalyptic number.

1623419998279 is a deficient number, since it is larger than the sum of its proper divisors (1).

1623419998279 is an equidigital number, since it uses as much as digits as its factorization.

1623419998279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105815808, while the sum is 70.

The spelling of 1623419998279 in words is "one trillion, six hundred twenty-three billion, four hundred nineteen million, nine hundred ninety-eight thousand, two hundred seventy-nine".