20307616320 has 112 divisors (see below), whose sum is σ = 67280088960. Its totient is φ = 5179908096.

The previous prime is 20307616319. The next prime is 20307616337. The reversal of 20307616320 is 2361670302.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 437785 + ... + 481944.

It is an arithmetic number, because the mean of its divisors is an integer number (600715080).

Almost surely, 2^20307616320 is an apocalyptic number.

20307616320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20307616320 is an abundant number, since it is smaller than the sum of its proper divisors (46972472640).

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

20307616320 is a wasteful number, since it uses less digits than its factorization.

20307616320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919772 (or 919762 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 30.

The spelling of 20307616320 in words is "twenty billion, three hundred seven million, six hundred sixteen thousand, three hundred twenty".