20192912109285 has 16 divisors (see below), whose sum is σ = 32856263772480. Its totient is φ = 10587018325760.

The previous prime is 20192912109281. The next prime is 20192912109287. The reversal of 20192912109285 is 58290121929102.

It is not a de Polignac number, because 20192912109285 - 2² = 20192912109281 is a prime.

It is a super-2 number, since 2×20192912109285² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20192912109281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11408424036 + ... + 11408425805.

It is an arithmetic number, because the mean of its divisors is an integer number (2053516485780).

Almost surely, 2^{20192912109285} is an apocalyptic number.

It is an amenable number.

20192912109285 is a deficient number, since it is larger than the sum of its proper divisors (12663351663195).

20192912109285 is a wasteful number, since it uses less digits than its factorization.

20192912109285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22816849908.

The product of its (nonzero) digits is 466560, while the sum is 51.

The spelling of 20192912109285 in words is "twenty trillion, one hundred ninety-two billion, nine hundred twelve million, one hundred nine thousand, two hundred eighty-five".