20840751741 has 8 divisors (see below), whose sum is σ = 29422237824. Its totient is φ = 13076550080.

The previous prime is 20840751721. The next prime is 20840751769. The reversal of 20840751741 is 14715704802.

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 20840751741 - 2¹³ = 20840743549 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20840751741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20840751721) 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, 204321045 + ... + 204321146.

It is an arithmetic number, because the mean of its divisors is an integer number (3677779728).

Almost surely, 2^20840751741 is an apocalyptic number.

It is an amenable number.

20840751741 is a deficient number, since it is larger than the sum of its proper divisors (8581486083).

20840751741 is a wasteful number, since it uses less digits than its factorization.

20840751741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408642211.

The product of its (nonzero) digits is 62720, while the sum is 39.

The spelling of 20840751741 in words is "twenty billion, eight hundred forty million, seven hundred fifty-one thousand, seven hundred forty-one".