111143557924 has 27 divisors (see below), whose sum is σ = 226266030417. Its totient is φ = 47630953104.

The previous prime is 111143557853. The next prime is 111143557969. The reversal of 111143557924 is 429755341111.

The square root of 111143557924 is 333382.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 57211856100 + 53931701824 = 239190^2 + 232232^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4655442 + ... + 4679254.

Almost surely, 2^111143557924 is an apocalyptic number.

111143557924 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

111143557924 is the 333382-nd square number.

It is an amenable number.

111143557924 is an abundant number, since it is smaller than the sum of its proper divisors (115122472493).

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

111143557924 is an frugal number, since it uses more digits than its factorization.

111143557924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47644 (or 23822 counting only the distinct ones).

The product of its digits is 151200, while the sum is 43.

The spelling of 111143557924 in words is "one hundred eleven billion, one hundred forty-three million, five hundred fifty-seven thousand, nine hundred twenty-four".