20072340321 has 16 divisors (see below), whose sum is σ = 29409248448. Its totient is φ = 12076256000.

The previous prime is 20072340307. The next prime is 20072340341. The reversal of 20072340321 is 12304327002.

It is a cyclic number.

It is not a de Polignac number, because 20072340321 - 2¹⁴ = 20072323937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20072340291 and 20072340300.

It is not an unprimeable number, because it can be changed into a prime (20072340341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2215380 + ... + 2224421.

It is an arithmetic number, because the mean of its divisors is an integer number (1838078028).

Almost surely, 2^20072340321 is an apocalyptic number.

It is an amenable number.

20072340321 is a deficient number, since it is larger than the sum of its proper divisors (9336908127).

20072340321 is a wasteful number, since it uses less digits than its factorization.

20072340321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4439952.

The product of its (nonzero) digits is 2016, while the sum is 24.

Adding to 20072340321 its reverse (12304327002), we get a palindrome (32376667323).

The spelling of 20072340321 in words is "twenty billion, seventy-two million, three hundred forty thousand, three hundred twenty-one".