998578629007 has 2 divisors, whose sum is σ = 998578629008. Its totient is φ = 998578629006.

The previous prime is 998578628909. The next prime is 998578629067. The reversal of 998578629007 is 700926875899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 998578629007 - 2³⁵ = 964218890639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998578629067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499289314503 + 499289314504.

It is an arithmetic number, because the mean of its divisors is an integer number (499289314504).

Almost surely, 2^998578629007 is an apocalyptic number.

998578629007 is a deficient number, since it is larger than the sum of its proper divisors (1).

998578629007 is an equidigital number, since it uses as much as digits as its factorization.

998578629007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 137168640, while the sum is 70.

The spelling of 998578629007 in words is "nine hundred ninety-eight billion, five hundred seventy-eight million, six hundred twenty-nine thousand, seven".