20294740669809 has 8 divisors (see below), whose sum is σ = 27059856263712. Its totient is φ = 13529726094560.

The previous prime is 20294740669771. The next prime is 20294740669873. The reversal of 20294740669809 is 90896604749202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20294740669809 - 2¹² = 20294740665713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20294740669809.

It is not an unprimeable number, because it can be changed into a prime (20294740669109) 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, 24784644 + ... + 25590389.

It is an arithmetic number, because the mean of its divisors is an integer number (3382482032964).

Almost surely, 2^{20294740669809} is an apocalyptic number.

It is an amenable number.

20294740669809 is a deficient number, since it is larger than the sum of its proper divisors (6765115593903).

20294740669809 is a wasteful number, since it uses less digits than its factorization.

20294740669809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50509327.

The product of its (nonzero) digits is 94058496, while the sum is 66.

The spelling of 20294740669809 in words is "twenty trillion, two hundred ninety-four billion, seven hundred forty million, six hundred sixty-nine thousand, eight hundred nine".