55161060565511 has 4 divisors (see below), whose sum is σ = 55161080278512. Its totient is φ = 55161040852512.

The previous prime is 55161060565493. The next prime is 55161060565519. The reversal of 55161060565511 is 11556506016155.

55161060565511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55161060565511 - 2¹⁸ = 55161060303367 is a prime.

It is a super-2 number, since 2×55161060565511² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55161060565519) 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 3 ways as a sum of consecutive naturals, for example, 4791650 + ... + 11544783.

It is an arithmetic number, because the mean of its divisors is an integer number (13790270069628).

Almost surely, 2^{55161060565511} is an apocalyptic number.

55161060565511 is a deficient number, since it is larger than the sum of its proper divisors (19713001).

55161060565511 is a wasteful number, since it uses less digits than its factorization.

55161060565511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19713000.

The product of its (nonzero) digits is 675000, while the sum is 47.

The spelling of 55161060565511 in words is "fifty-five trillion, one hundred sixty-one billion, sixty million, five hundred sixty-five thousand, five hundred eleven".