28621930590649 has 8 divisors (see below), whose sum is σ = 31223982539520. Its totient is φ = 26019888351600.

The previous prime is 28621930590647. The next prime is 28621930590703. The reversal of 28621930590649 is 94609503912682.

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

It is not a de Polignac number, because 28621930590649 - 2¹ = 28621930590647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28621930590647) 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, 4627467 + ... + 8868895.

It is an arithmetic number, because the mean of its divisors is an integer number (3902997817440).

Almost surely, 2^{28621930590649} is an apocalyptic number.

It is an amenable number.

28621930590649 is a deficient number, since it is larger than the sum of its proper divisors (2602051948871).

28621930590649 is a wasteful number, since it uses less digits than its factorization.

28621930590649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4854911.

The product of its (nonzero) digits is 50388480, while the sum is 64.

The spelling of 28621930590649 in words is "twenty-eight trillion, six hundred twenty-one billion, nine hundred thirty million, five hundred ninety thousand, six hundred forty-nine".