20782028701 has 8 divisors (see below), whose sum is σ = 23883577920. Its totient is φ = 17713651488.

The previous prime is 20782028593. The next prime is 20782028719. The reversal of 20782028701 is 10782028702.

It is a happy number.

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 20782028701 - 2¹⁹ = 20781504413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20782028101) 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, 8291656 + ... + 8294161.

It is an arithmetic number, because the mean of its divisors is an integer number (2985447240).

Almost surely, 2^20782028701 is an apocalyptic number.

It is an amenable number.

20782028701 is a deficient number, since it is larger than the sum of its proper divisors (3101549219).

20782028701 is a wasteful number, since it uses less digits than its factorization.

20782028701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16586003.

The product of its (nonzero) digits is 25088, while the sum is 37.

Subtracting from 20782028701 its reverse (10782028702), we obtain a palindrome (9999999999).

The spelling of 20782028701 in words is "twenty billion, seven hundred eighty-two million, twenty-eight thousand, seven hundred one".