20413021340 has 12 divisors (see below), whose sum is σ = 42867344856. Its totient is φ = 8165208528.

The previous prime is 20413021331. The next prime is 20413021351. The reversal of 20413021340 is 4312031402.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1020651067 = 20413021340 / (2 + 0 + 4 + 1 + 3 + 0 + 2 + 1 + 3 + 4 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510325514 + ... + 510325553.

It is an arithmetic number, because the mean of its divisors is an integer number (3572278738).

Almost surely, 2^20413021340 is an apocalyptic number.

20413021340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20413021340 is an abundant number, since it is smaller than the sum of its proper divisors (22454323516).

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

20413021340 is a wasteful number, since it uses less digits than its factorization.

20413021340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020651076 (or 1020651074 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20413021340 its reverse (4312031402), we get a palindrome (24725052742).

The spelling of 20413021340 in words is "twenty billion, four hundred thirteen million, twenty-one thousand, three hundred forty".