20415033340 has 24 divisors (see below), whose sum is σ = 46169383680. Its totient is φ = 7537858368.

The previous prime is 20415033323. The next prime is 20415033349. The reversal of 20415033340 is 4333051402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20415033349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39259420 + ... + 39259939.

It is an arithmetic number, because the mean of its divisors is an integer number (1923724320).

Almost surely, 2^20415033340 is an apocalyptic number.

20415033340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20415033340 is an abundant number, since it is smaller than the sum of its proper divisors (25754350340).

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

20415033340 is a wasteful number, since it uses less digits than its factorization.

20415033340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78519381 (or 78519379 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 20415033340 its reverse (4333051402), we get a palindrome (24748084742).

The spelling of 20415033340 in words is "twenty billion, four hundred fifteen million, thirty-three thousand, three hundred forty".