55393851111 has 4 divisors (see below), whose sum is σ = 73858468152. Its totient is φ = 36929234072.

The previous prime is 55393851109. The next prime is 55393851157. The reversal of 55393851111 is 11115839355.

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 55393851111 - 2¹ = 55393851109 is a prime.

It is a super-3 number, since 3×55393851111³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55393851011) 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, 9232308516 + ... + 9232308521.

It is an arithmetic number, because the mean of its divisors is an integer number (18464617038).

Almost surely, 2^55393851111 is an apocalyptic number.

55393851111 is a deficient number, since it is larger than the sum of its proper divisors (18464617041).

55393851111 is a wasteful number, since it uses less digits than its factorization.

55393851111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18464617040.

The product of its digits is 81000, while the sum is 42.

The spelling of 55393851111 in words is "fifty-five billion, three hundred ninety-three million, eight hundred fifty-one thousand, one hundred eleven".