111551143040 has 64 divisors (see below), whose sum is σ = 268623709560. Its totient is φ = 44294725632.

The previous prime is 111551142979. The next prime is 111551143057. The reversal of 111551143040 is 40341155111.

It can be written as a sum of positive squares in 4 ways, for example, as 60803669056 + 50747473984 = 246584^2 + 225272^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 548447 + ... + 723806.

Almost surely, 2^111551143040 is an apocalyptic number.

111551143040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111551143040 is an abundant number, since it is smaller than the sum of its proper divisors (157072566520).

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

111551143040 is a wasteful number, since it uses less digits than its factorization.

111551143040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272409 (or 1272397 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 26.

Adding to 111551143040 its reverse (40341155111), we get a palindrome (151892298151).

The spelling of 111551143040 in words is "one hundred eleven billion, five hundred fifty-one million, one hundred forty-three thousand, forty".