20302440215 has 8 divisors (see below), whose sum is σ = 25645187760. Its totient is φ = 15387112512.

The previous prime is 20302440209. The next prime is 20302440227. The reversal of 20302440215 is 51204420302.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20302440215 - 2⁸ = 20302439959 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 106854854 + ... + 106855043.

It is an arithmetic number, because the mean of its divisors is an integer number (3205648470).

Almost surely, 2^20302440215 is an apocalyptic number.

20302440215 is a deficient number, since it is larger than the sum of its proper divisors (5342747545).

20302440215 is a wasteful number, since it uses less digits than its factorization.

20302440215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213709921.

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 20302440215 its reverse (51204420302), we get a palindrome (71506860517).

The spelling of 20302440215 in words is "twenty billion, three hundred two million, four hundred forty thousand, two hundred fifteen".