55161165601111 has 32 divisors (see below), whose sum is σ = 58610791609920. Its totient is φ = 51824141107200.

The previous prime is 55161165601099. The next prime is 55161165601133. The reversal of 55161165601111 is 11110656116155.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 55161165601111 - 2¹¹ = 55161165599063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55161165631111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1934582791 + ... + 1934611303.

It is an arithmetic number, because the mean of its divisors is an integer number (1831587237810).

Almost surely, 2^{55161165601111} is an apocalyptic number.

55161165601111 is a deficient number, since it is larger than the sum of its proper divisors (3449626008809).

55161165601111 is a wasteful number, since it uses less digits than its factorization.

55161165601111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34387.

The product of its (nonzero) digits is 27000, while the sum is 40.

The spelling of 55161165601111 in words is "fifty-five trillion, one hundred sixty-one billion, one hundred sixty-five million, six hundred one thousand, one hundred eleven".