20784085106090 has 16 divisors (see below), whose sum is σ = 39380371780320. Its totient is φ = 7876074355920.

The previous prime is 20784085106069. The next prime is 20784085106093. The reversal of 20784085106090 is 9060158048702.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20784085106093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54694960616 + ... + 54694960995.

It is an arithmetic number, because the mean of its divisors is an integer number (2461273236270).

Almost surely, 2^{20784085106090} is an apocalyptic number.

20784085106090 is a deficient number, since it is larger than the sum of its proper divisors (18596286674230).

20784085106090 is a wasteful number, since it uses less digits than its factorization.

20784085106090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109389921637.

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 20784085106090 in words is "twenty trillion, seven hundred eighty-four billion, eighty-five million, one hundred six thousand, ninety".