20015423403 has 8 divisors (see below), whose sum is σ = 28091822400. Its totient is φ = 12641320008.

The previous prime is 20015423381. The next prime is 20015423413. The reversal of 20015423403 is 30432451002.

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

It is not a de Polignac number, because 20015423403 - 2⁶ = 20015423339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20015423413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175573833 + ... + 175573946.

It is an arithmetic number, because the mean of its divisors is an integer number (3511477800).

Almost surely, 2^20015423403 is an apocalyptic number.

20015423403 is a deficient number, since it is larger than the sum of its proper divisors (8076398997).

20015423403 is a wasteful number, since it uses less digits than its factorization.

20015423403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351147801.

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 20015423403 its reverse (30432451002), we get a palindrome (50447874405).

The spelling of 20015423403 in words is "twenty billion, fifteen million, four hundred twenty-three thousand, four hundred three".