55156061116111 has 4 divisors (see below), whose sum is σ = 55702160731224. Its totient is φ = 54609961501000.

The previous prime is 55156061116103. The next prime is 55156061116127. The reversal of 55156061116111 is 11161116065155.

It is a happy number.

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 55156061116111 - 2³ = 55156061116103 is a prime.

It is a super-2 number, since 2×55156061116111² (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 (55156061116141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 273049807405 + ... + 273049807606.

It is an arithmetic number, because the mean of its divisors is an integer number (13925540182806).

Almost surely, 2^{55156061116111} is an apocalyptic number.

55156061116111 is a deficient number, since it is larger than the sum of its proper divisors (546099615113).

55156061116111 is a wasteful number, since it uses less digits than its factorization.

55156061116111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546099615112.

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

The spelling of 55156061116111 in words is "fifty-five trillion, one hundred fifty-six billion, sixty-one million, one hundred sixteen thousand, one hundred eleven".