916209820553 has 2 divisors, whose sum is σ = 916209820554. Its totient is φ = 916209820552.

The previous prime is 916209820529. The next prime is 916209820597. The reversal of 916209820553 is 355028902619.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 870811847929 + 45397972624 = 933173^2 + 213068^2 .

It is a cyclic number.

It is not a de Polignac number, because 916209820553 - 2³⁰ = 915136078729 is a prime.

It is a super-2 number, since 2×916209820553² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (916209820753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 458104910276 + 458104910277.

It is an arithmetic number, because the mean of its divisors is an integer number (458104910277).

Almost surely, 2^916209820553 is an apocalyptic number.

It is an amenable number.

916209820553 is a deficient number, since it is larger than the sum of its proper divisors (1).

916209820553 is an equidigital number, since it uses as much as digits as its factorization.

916209820553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1166400, while the sum is 50.

The spelling of 916209820553 in words is "nine hundred sixteen billion, two hundred nine million, eight hundred twenty thousand, five hundred fifty-three".