111551340444 has 48 divisors (see below), whose sum is σ = 264392892288. Its totient is φ = 36601576128.

The previous prime is 111551340409. The next prime is 111551340451. The reversal of 111551340444 is 444043155111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75094 + ... + 478269.

It is an arithmetic number, because the mean of its divisors is an integer number (5508185256).

Almost surely, 2^111551340444 is an apocalyptic number.

It is an amenable number.

111551340444 is an abundant number, since it is smaller than the sum of its proper divisors (152841551844).

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

111551340444 is a wasteful number, since it uses less digits than its factorization.

111551340444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553634 (or 553632 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

Adding to 111551340444 its reverse (444043155111), we get a palindrome (555594495555).

The spelling of 111551340444 in words is "one hundred eleven billion, five hundred fifty-one million, three hundred forty thousand, four hundred forty-four".