55020100066 has 16 divisors (see below), whose sum is σ = 83470600440. Its totient is φ = 27197372800.

The previous prime is 55020100027. The next prime is 55020100067. The reversal of 55020100066 is 66000102055.

It can be written as a sum of positive squares in 4 ways, for example, as 54091130625 + 928969441 = 232575^2 + 30479^2 .

It is a super-2 number, since 2×55020100066² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55020100066.

It is not an unprimeable number, because it can be changed into a prime (55020100067) 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 in 7 ways as a sum of consecutive naturals, for example, 64411 + ... + 337918.

Almost surely, 2^55020100066 is an apocalyptic number.

55020100066 is a deficient number, since it is larger than the sum of its proper divisors (28450500374).

55020100066 is a wasteful number, since it uses less digits than its factorization.

55020100066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403109.

The product of its (nonzero) digits is 1800, while the sum is 25.

The spelling of 55020100066 in words is "fifty-five billion, twenty million, one hundred thousand, sixty-six".