55116661633 has 8 divisors (see below), whose sum is σ = 60378848640. Its totient is φ = 49896404880.

The previous prime is 55116661603. The next prime is 55116661687. The reversal of 55116661633 is 33616661155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55116661633 - 2⁵ = 55116661601 is a prime.

It is a super-3 number, since 3×55116661633³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 55116661633.

It is not an unprimeable number, because it can be changed into a prime (55116661603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10479810 + ... + 10485067.

It is an arithmetic number, because the mean of its divisors is an integer number (7547356080).

Almost surely, 2^55116661633 is an apocalyptic number.

It is an amenable number.

55116661633 is a deficient number, since it is larger than the sum of its proper divisors (5262187007).

55116661633 is a wasteful number, since it uses less digits than its factorization.

55116661633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20965127.

The product of its digits is 291600, while the sum is 43.

The spelling of 55116661633 in words is "fifty-five billion, one hundred sixteen million, six hundred sixty-one thousand, six hundred thirty-three".