111878807859 has 48 divisors (see below), whose sum is σ = 202648485312. Its totient is φ = 57899522304.

The previous prime is 111878807813. The next prime is 111878807891. The reversal of 111878807859 is 958708878111.

It is not a de Polignac number, because 111878807859 - 2¹² = 111878803763 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 111878807796 and 111878807805.

It is not an unprimeable number, because it can be changed into a prime (111878807809) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1245312 + ... + 1332125.

It is an arithmetic number, because the mean of its divisors is an integer number (4221843444).

Almost surely, 2^111878807859 is an apocalyptic number.

111878807859 is a deficient number, since it is larger than the sum of its proper divisors (90769677453).

111878807859 is a wasteful number, since it uses less digits than its factorization.

111878807859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2577516 (or 2577513 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 63.

The spelling of 111878807859 in words is "one hundred eleven billion, eight hundred seventy-eight million, eight hundred seven thousand, eight hundred fifty-nine".