1009990998953 has 2 divisors, whose sum is σ = 1009990998954. Its totient is φ = 1009990998952.

The previous prime is 1009990998889. The next prime is 1009990999007. The reversal of 1009990998953 is 3598990999001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 983593848169 + 26397150784 = 991763^2 + 162472^2 .

It is an emirp because it is prime and its reverse (3598990999001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1009990998953 - 2⁶ = 1009990998889 is a prime.

It is not a weakly prime, because it can be changed into another prime (1009990398953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 504995499476 + 504995499477.

It is an arithmetic number, because the mean of its divisors is an integer number (504995499477).

Almost surely, 2^{1009990998953} is an apocalyptic number.

It is an amenable number.

1009990998953 is a deficient number, since it is larger than the sum of its proper divisors (1).

1009990998953 is an equidigital number, since it uses as much as digits as its factorization.

1009990998953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63772920, while the sum is 71.

The spelling of 1009990998953 in words is "one trillion, nine billion, nine hundred ninety million, nine hundred ninety-eight thousand, nine hundred fifty-three".