109683778158 has 40 divisors (see below), whose sum is σ = 245869956552. Its totient is φ = 36546822864.

The previous prime is 109683778147. The next prime is 109683778199. The reversal of 109683778158 is 851877386901.

109683778158 is a `hidden beast` number, since 109 + 6 + 8 + 377 + 8 + 158 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 109683778095 and 109683778104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 281841 + ... + 546627.

Almost surely, 2^109683778158 is an apocalyptic number.

109683778158 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

109683778158 is an abundant number, since it is smaller than the sum of its proper divisors (136186178394).

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

109683778158 is a wasteful number, since it uses less digits than its factorization.

109683778158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267358 (or 267349 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 63.

The spelling of 109683778158 in words is "one hundred nine billion, six hundred eighty-three million, seven hundred seventy-eight thousand, one hundred fifty-eight".