55005005055551 has 16 divisors (see below), whose sum is σ = 59058485242560. Its totient is φ = 51109678963200.

The previous prime is 55005005055491. The next prime is 55005005055589. The reversal of 55005005055551 is 15555050050055.

55005005055551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 55005005055551 - 2¹⁸ = 55005004793407 is a prime.

It is a super-2 number, since 2×55005005055551² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55005005055499 and 55005005055508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55005005055151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223258346 + ... + 223504583.

It is an arithmetic number, because the mean of its divisors is an integer number (3691155327660).

Almost surely, 2^{55005005055551} is an apocalyptic number.

55005005055551 is a deficient number, since it is larger than the sum of its proper divisors (4053480187009).

55005005055551 is a wasteful number, since it uses less digits than its factorization.

55005005055551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446763106.

The product of its (nonzero) digits is 390625, while the sum is 41.

The spelling of 55005005055551 in words is "fifty-five trillion, five billion, five million, fifty-five thousand, five hundred fifty-one".