111988358792 has 8 divisors (see below), whose sum is σ = 209978172750. Its totient is φ = 55994179392.

The previous prime is 111988358743. The next prime is 111988358803. The reversal of 111988358792 is 297853889111.

It can be written as a sum of positive squares in only one way, i.e., 111979913956 + 8444836 = 334634^2 + 2906^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6999272417 + ... + 6999272432.

Almost surely, 2^111988358792 is an apocalyptic number.

It is an amenable number.

111988358792 is a deficient number, since it is larger than the sum of its proper divisors (97989813958).

111988358792 is a wasteful number, since it uses less digits than its factorization.

111988358792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13998544855 (or 13998544851 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 62.

The spelling of 111988358792 in words is "one hundred eleven billion, nine hundred eighty-eight million, three hundred fifty-eight thousand, seven hundred ninety-two".