20828549536790 has 8 divisors (see below), whose sum is σ = 37491389166240. Its totient is φ = 8331419814712.

The previous prime is 20828549536771. The next prime is 20828549536799. The reversal of 20828549536790 is 9763594582802.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20828549536790.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20828549536799) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1041427476830 + ... + 1041427476849.

It is an arithmetic number, because the mean of its divisors is an integer number (4686423645780).

Almost surely, 2^{20828549536790} is an apocalyptic number.

20828549536790 is a deficient number, since it is larger than the sum of its proper divisors (16662839629450).

20828549536790 is a wasteful number, since it uses less digits than its factorization.

20828549536790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2082854953686.

The product of its (nonzero) digits is 261273600, while the sum is 68.

The spelling of 20828549536790 in words is "twenty trillion, eight hundred twenty-eight billion, five hundred forty-nine million, five hundred thirty-six thousand, seven hundred ninety".