999999013894451 has 2 divisors, whose sum is σ = 999999013894452. Its totient is φ = 999999013894450.

The previous prime is 999999013894337. The next prime is 999999013894457. The reversal of 999999013894451 is 154498310999999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 999999013894451 - 2¹⁰ = 999999013893427 is a prime.

It is not a weakly prime, because it can be changed into another prime (999999013894457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499999506947225 + 499999506947226.

It is an arithmetic number, because the mean of its divisors is an integer number (499999506947226).

Almost surely, 2^{999999013894451} is an apocalyptic number.

999999013894451 is a deficient number, since it is larger than the sum of its proper divisors (1).

999999013894451 is an equidigital number, since it uses as much as digits as its factorization.

999999013894451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9183300480, while the sum is 89.

The spelling of 999999013894451 in words is "nine hundred ninety-nine trillion, nine hundred ninety-nine billion, thirteen million, eight hundred ninety-four thousand, four hundred fifty-one".