555165665091 has 6 divisors (see below), whose sum is σ = 801905960700. Its totient is φ = 370110443388.

The previous prime is 555165665083. The next prime is 555165665111. The reversal of 555165665091 is 190566561555.

It is not a de Polignac number, because 555165665091 - 2³ = 555165665083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (555165665291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30842536941 + ... + 30842536958.

It is an arithmetic number, because the mean of its divisors is an integer number (133650993450).

Almost surely, 2^555165665091 is an apocalyptic number.

555165665091 is a deficient number, since it is larger than the sum of its proper divisors (246740295609).

555165665091 is a wasteful number, since it uses less digits than its factorization.

555165665091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61685073905 (or 61685073902 counting only the distinct ones).

The product of its (nonzero) digits is 6075000, while the sum is 54.

The spelling of 555165665091 in words is "five hundred fifty-five billion, one hundred sixty-five million, six hundred sixty-five thousand, ninety-one".