20124403115 has 16 divisors (see below), whose sum is σ = 25324250400. Its totient is φ = 15331421952.

The previous prime is 20124403111. The next prime is 20124403151. The reversal of 20124403115 is 51130442102.

It is a cyclic number.

It is not a de Polignac number, because 20124403115 - 2² = 20124403111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20124403111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 940025 + ... + 961194.

It is an arithmetic number, because the mean of its divisors is an integer number (1582765650).

Almost surely, 2^20124403115 is an apocalyptic number.

20124403115 is a deficient number, since it is larger than the sum of its proper divisors (5199847285).

20124403115 is a wasteful number, since it uses less digits than its factorization.

20124403115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1901326.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 20124403115 its reverse (51130442102), we get a palindrome (71254845217).

The spelling of 20124403115 in words is "twenty billion, one hundred twenty-four million, four hundred three thousand, one hundred fifteen".