111511643054 has 16 divisors (see below), whose sum is σ = 191210667648. Its totient is φ = 47778741432.

The previous prime is 111511642961. The next prime is 111511643057. The reversal of 111511643054 is 450346115111.

It is a self number, because there is not a number n which added to its sum of digits gives 111511643054.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111511643057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 938852 + ... + 1050935.

It is an arithmetic number, because the mean of its divisors is an integer number (11950666728).

Almost surely, 2^111511643054 is an apocalyptic number.

111511643054 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

111511643054 is a deficient number, since it is larger than the sum of its proper divisors (79699024594).

111511643054 is a wasteful number, since it uses less digits than its factorization.

111511643054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1993799.

The product of its (nonzero) digits is 7200, while the sum is 32.

Adding to 111511643054 its reverse (450346115111), we get a palindrome (561857758165).

The spelling of 111511643054 in words is "one hundred eleven billion, five hundred eleven million, six hundred forty-three thousand, fifty-four".