20840380341 has 16 divisors (see below), whose sum is σ = 30551973888. Its totient is φ = 12531078000.

The previous prime is 20840380333. The next prime is 20840380409. The reversal of 20840380341 is 14308304802.

It is not a de Polignac number, because 20840380341 - 2³ = 20840380333 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20840387341) 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, 2482135 + ... + 2490516.

It is an arithmetic number, because the mean of its divisors is an integer number (1909498368).

Almost surely, 2^20840380341 is an apocalyptic number.

It is an amenable number.

20840380341 is a deficient number, since it is larger than the sum of its proper divisors (9711593547).

20840380341 is a wasteful number, since it uses less digits than its factorization.

20840380341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4972792.

The product of its (nonzero) digits is 18432, while the sum is 33.

The spelling of 20840380341 in words is "twenty billion, eight hundred forty million, three hundred eighty thousand, three hundred forty-one".