111235645540 has 48 divisors (see below), whose sum is σ = 246598228800. Its totient is φ = 42030928512.

The previous prime is 111235645517. The next prime is 111235645541. The reversal of 111235645540 is 45546532111.

It is a self number, because there is not a number n which added to its sum of digits gives 111235645540.

It is not an unprimeable number, because it can be changed into a prime (111235645541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 289935 + ... + 553654.

It is an arithmetic number, because the mean of its divisors is an integer number (5137463100).

Almost surely, 2^111235645540 is an apocalyptic number.

111235645540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111235645540 is an abundant number, since it is smaller than the sum of its proper divisors (135362583260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111235645540 is a wasteful number, since it uses less digits than its factorization.

111235645540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843964 (or 843962 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 111235645540 in words is "one hundred eleven billion, two hundred thirty-five million, six hundred forty-five thousand, five hundred forty".