111401554545 has 24 divisors (see below), whose sum is σ = 194804851176. Its totient is φ = 58888370688.

The previous prime is 111401554543. The next prime is 111401554571. The reversal of 111401554545 is 545455104111.

111401554545 is a `hidden beast` number, since 1 + 11 + 40 + 1 + 554 + 54 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4525521984 + 106876032561 = 67272^2 + 326919^2 .

It is not a de Polignac number, because 111401554545 - 2¹ = 111401554543 is a prime.

It is a super-2 number, since 2×111401554545² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111401554543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10948854 + ... + 10959023.

It is an arithmetic number, because the mean of its divisors is an integer number (8116868799).

Almost surely, 2^111401554545 is an apocalyptic number.

111401554545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111401554545 is a deficient number, since it is larger than the sum of its proper divisors (83403296631).

111401554545 is a wasteful number, since it uses less digits than its factorization.

111401554545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21908001 (or 21907998 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 36.

Adding to 111401554545 its reverse (545455104111), we get a palindrome (656856658656).

The spelling of 111401554545 in words is "one hundred eleven billion, four hundred one million, five hundred fifty-four thousand, five hundred forty-five".