1299423554843 has 2 divisors, whose sum is σ = 1299423554844. Its totient is φ = 1299423554842.

The previous prime is 1299423554797. The next prime is 1299423554857. The reversal of 1299423554843 is 3484553249921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1299423554843 - 2²⁶ = 1299356445979 is a prime.

It is not a weakly prime, because it can be changed into another prime (1299423559843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649711777421 + 649711777422.

It is an arithmetic number, because the mean of its divisors is an integer number (649711777422).

Almost surely, 2^{1299423554843} is an apocalyptic number.

1299423554843 is a deficient number, since it is larger than the sum of its proper divisors (1).

1299423554843 is an equidigital number, since it uses as much as digits as its factorization.

1299423554843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37324800, while the sum is 59.

The spelling of 1299423554843 in words is "one trillion, two hundred ninety-nine billion, four hundred twenty-three million, five hundred fifty-four thousand, eight hundred forty-three".