111642983487 has 24 divisors (see below), whose sum is σ = 184371258240. Its totient is φ = 63771161040.

The previous prime is 111642983467. The next prime is 111642983561. The reversal of 111642983487 is 784389246111.

111642983487 is a `hidden beast` number, since 1 + 1 + 1 + 6 + 4 + 298 + 348 + 7 = 666.

It is not a de Polignac number, because 111642983487 - 2¹² = 111642979391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111642983407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 181089 + ... + 506042.

It is an arithmetic number, because the mean of its divisors is an integer number (7682135760).

Almost surely, 2^111642983487 is an apocalyptic number.

111642983487 is a deficient number, since it is larger than the sum of its proper divisors (72728274753).

111642983487 is a wasteful number, since it uses less digits than its factorization.

111642983487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689723 (or 689720 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The spelling of 111642983487 in words is "one hundred eleven billion, six hundred forty-two million, nine hundred eighty-three thousand, four hundred eighty-seven".