109785117498 has 48 divisors (see below), whose sum is σ = 256008614400. Its totient is φ = 31294698624.

The previous prime is 109785117473. The next prime is 109785117499. The reversal of 109785117498 is 894711587901.

It is not an unprimeable number, because it can be changed into a prime (109785117499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 303898 + ... + 558501.

It is an arithmetic number, because the mean of its divisors is an integer number (5333512800).

Almost surely, 2^109785117498 is an apocalyptic number.

109785117498 is an abundant number, since it is smaller than the sum of its proper divisors (146223496902).

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

109785117498 is a wasteful number, since it uses less digits than its factorization.

109785117498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862851 (or 862844 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 60.

The spelling of 109785117498 in words is "one hundred nine billion, seven hundred eighty-five million, one hundred seventeen thousand, four hundred ninety-eight".