55011109906 has 12 divisors (see below), whose sum is σ = 87088226382. Its totient is φ = 26057893824.

The previous prime is 55011109873. The next prime is 55011109919. The reversal of 55011109906 is 60990111055.

It can be written as a sum of positive squares in only one way, i.e., 41245954281 + 13765155625 = 203091^2 + 117325^2 .

It is a super-2 number, since 2×55011109906² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 38095615 + ... + 38097058.

Almost surely, 2^55011109906 is an apocalyptic number.

55011109906 is a deficient number, since it is larger than the sum of its proper divisors (32077116476).

55011109906 is a wasteful number, since it uses less digits than its factorization.

55011109906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76192713 (or 76192694 counting only the distinct ones).

The product of its (nonzero) digits is 12150, while the sum is 37.

The spelling of 55011109906 in words is "fifty-five billion, eleven million, one hundred nine thousand, nine hundred six".