20321350264 has 128 divisors (see below), whose sum is σ = 41936486400. Its totient is φ = 9202152960.

The previous prime is 20321350261. The next prime is 20321350339. The reversal of 20321350264 is 46205312302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20321350261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106394409 + ... + 106394599.

It is an arithmetic number, because the mean of its divisors is an integer number (327628800).

Almost surely, 2^20321350264 is an apocalyptic number.

It is an amenable number.

20321350264 is an abundant number, since it is smaller than the sum of its proper divisors (21615136136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20321350264 is a wasteful number, since it uses less digits than its factorization.

20321350264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533 (or 529 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 20321350264 its reverse (46205312302), we get a palindrome (66526662566).

The spelling of 20321350264 in words is "twenty billion, three hundred twenty-one million, three hundred fifty thousand, two hundred sixty-four".