20326980320 has 24 divisors (see below), whose sum is σ = 48022491384. Its totient is φ = 8130792064.

The previous prime is 20326980307. The next prime is 20326980361. The reversal of 20326980320 is 2308962302.

It is a super-2 number, since 2×20326980320² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63521654 + ... + 63521973.

It is an arithmetic number, because the mean of its divisors is an integer number (2000937141).

Almost surely, 2^20326980320 is an apocalyptic number.

20326980320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20326980320 is an abundant number, since it is smaller than the sum of its proper divisors (27695511064).

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

20326980320 is a wasteful number, since it uses less digits than its factorization.

20326980320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127043642 (or 127043634 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The spelling of 20326980320 in words is "twenty billion, three hundred twenty-six million, nine hundred eighty thousand, three hundred twenty".