20541382340 has 24 divisors (see below), whose sum is σ = 45012421440. Its totient is φ = 7859311328.

The previous prime is 20541382339. The next prime is 20541382343. The reversal of 20541382340 is 4328314502.

It is a junction number, because it is equal to n+sod(n) for n = 20541382297 and 20541382306.

It is not an unprimeable number, because it can be changed into a prime (20541382343) 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, 22327130 + ... + 22328049.

It is an arithmetic number, because the mean of its divisors is an integer number (1875517560).

Almost surely, 2^20541382340 is an apocalyptic number.

20541382340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20541382340 is an abundant number, since it is smaller than the sum of its proper divisors (24471039100).

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

20541382340 is a wasteful number, since it uses less digits than its factorization.

20541382340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44655211 (or 44655209 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 20541382340 its reverse (4328314502), we get a palindrome (24869696842).

The spelling of 20541382340 in words is "twenty billion, five hundred forty-one million, three hundred eighty-two thousand, three hundred forty".