109020279785 has 16 divisors (see below), whose sum is σ = 132884780736. Its totient is φ = 85844708928.

The previous prime is 109020279769. The next prime is 109020279793. The reversal of 109020279785 is 587972020901.

It is a cyclic number.

It is not a de Polignac number, because 109020279785 - 2⁴ = 109020279769 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 282854 + ... + 545936.

It is an arithmetic number, because the mean of its divisors is an integer number (8305298796).

Almost surely, 2^109020279785 is an apocalyptic number.

It is an amenable number.

109020279785 is a deficient number, since it is larger than the sum of its proper divisors (23864500951).

109020279785 is a wasteful number, since it uses less digits than its factorization.

109020279785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264392.

The product of its (nonzero) digits is 635040, while the sum is 50.

The spelling of 109020279785 in words is "one hundred nine billion, twenty million, two hundred seventy-nine thousand, seven hundred eighty-five".