5515551650601 has 8 divisors (see below), whose sum is σ = 8171187630560. Its totient is φ = 3677034433716.

The previous prime is 5515551650561. The next prime is 5515551650617. The reversal of 5515551650601 is 1060561555155.

It is not a de Polignac number, because 5515551650601 - 2¹⁵ = 5515551617833 is a prime.

It is a super-2 number, since 2×5515551650601² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5515551650621) 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, 102139845355 + ... + 102139845408.

It is an arithmetic number, because the mean of its divisors is an integer number (1021398453820).

Almost surely, 2^{5515551650601} is an apocalyptic number.

It is an amenable number.

5515551650601 is a deficient number, since it is larger than the sum of its proper divisors (2655635979959).

5515551650601 is a wasteful number, since it uses less digits than its factorization.

5515551650601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204279690772 (or 204279690766 counting only the distinct ones).

The product of its (nonzero) digits is 562500, while the sum is 45.

The spelling of 5515551650601 in words is "five trillion, five hundred fifteen billion, five hundred fifty-one million, six hundred fifty thousand, six hundred one".