20114243515 has 64 divisors (see below), whose sum is σ = 27251085312. Its totient is φ = 14179737600.

The previous prime is 20114243507. The next prime is 20114243519. The reversal of 20114243515 is 51534241102.

It is not a de Polignac number, because 20114243515 - 2³ = 20114243507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20114243519) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12802680 + ... + 12804250.

It is an arithmetic number, because the mean of its divisors is an integer number (425798208).

Almost surely, 2^20114243515 is an apocalyptic number.

20114243515 is a deficient number, since it is larger than the sum of its proper divisors (7136841797).

20114243515 is a wasteful number, since it uses less digits than its factorization.

20114243515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1780.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 20114243515 its reverse (51534241102), we get a palindrome (71648484617).

The spelling of 20114243515 in words is "twenty billion, one hundred fourteen million, two hundred forty-three thousand, five hundred fifteen".