109785011 has 4 divisors (see below), whose sum is σ = 125468592. Its totient is φ = 94101432.

The previous prime is 109785001. The next prime is 109785019. The reversal of 109785011 is 110587901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110587901 = 167 ⋅662203.

It is a cyclic number.

It is not a de Polignac number, because 109785011 - 2¹⁰ = 109783987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109785019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7841780 + ... + 7841793.

It is an arithmetic number, because the mean of its divisors is an integer number (31367148).

Almost surely, 2^109785011 is an apocalyptic number.

109785011 is a deficient number, since it is larger than the sum of its proper divisors (15683581).

109785011 is an equidigital number, since it uses as much as digits as its factorization.

109785011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15683580.

The product of its (nonzero) digits is 2520, while the sum is 32.

The square root of 109785011 is about 10477.8342704969. The cubic root of 109785011 is about 478.8296298316.

The spelling of 109785011 in words is "one hundred nine million, seven hundred eighty-five thousand, eleven".