20342111322340 has 24 divisors (see below), whose sum is σ = 42719736238200. Its totient is φ = 8136596441088.

The previous prime is 20342111322311. The next prime is 20342111322349. The reversal of 20342111322340 is 4322311124302.

It can be written as a sum of positive squares in 4 ways, for example, as 412297546816 + 19929813775524 = 642104^2 + 4464282^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20342111322299 and 20342111322308.

It is not an unprimeable number, because it can be changed into a prime (20342111322349) 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, 14832415 + ... + 16145734.

It is an arithmetic number, because the mean of its divisors is an integer number (1779989009925).

Almost surely, 2^{20342111322340} is an apocalyptic number.

20342111322340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20342111322340 is an abundant number, since it is smaller than the sum of its proper divisors (22377624915860).

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

20342111322340 is a wasteful number, since it uses less digits than its factorization.

20342111322340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31010991 (or 31010989 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 20342111322340 its reverse (4322311124302), we get a palindrome (24664422446642).

The spelling of 20342111322340 in words is "twenty trillion, three hundred forty-two billion, one hundred eleven million, three hundred twenty-two thousand, three hundred forty".