20115343415 has 32 divisors (see below), whose sum is σ = 27150552000. Its totient is φ = 14216767488.

The previous prime is 20115343403. The next prime is 20115343421. The reversal of 20115343415 is 51434351102.

It is a cyclic number.

It is not a de Polignac number, because 20115343415 - 2⁸ = 20115343159 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118901 + ... + 233169.

It is an arithmetic number, because the mean of its divisors is an integer number (848454750).

Almost surely, 2^20115343415 is an apocalyptic number.

20115343415 is a deficient number, since it is larger than the sum of its proper divisors (7035208585).

20115343415 is a wasteful number, since it uses less digits than its factorization.

20115343415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114419.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 20115343415 its reverse (51434351102), we get a palindrome (71549694517).

The spelling of 20115343415 in words is "twenty billion, one hundred fifteen million, three hundred forty-three thousand, four hundred fifteen".