999955554467 has 2 divisors, whose sum is σ = 999955554468. Its totient is φ = 999955554466.

The previous prime is 999955554457. The next prime is 999955554469. The reversal of 999955554467 is 764455559999.

It is a strong prime.

It is an emirp because it is prime and its reverse (764455559999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 999955554467 - 2¹⁴ = 999955538083 is a prime.

It is a super-2 number, since 2×999955554467² (a number of 25 digits) contains 22 as substring.

Together with 999955554469, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (999955554469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499977777233 + 499977777234.

It is an arithmetic number, because the mean of its divisors is an integer number (499977777234).

Almost surely, 2^999955554467 is an apocalyptic number.

999955554467 is a deficient number, since it is larger than the sum of its proper divisors (1).

999955554467 is an equidigital number, since it uses as much as digits as its factorization.

999955554467 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2755620000, while the sum is 77.

The spelling of 999955554467 in words is "nine hundred ninety-nine billion, nine hundred fifty-five million, five hundred fifty-four thousand, four hundred sixty-seven".