20015375126 has 4 divisors (see below), whose sum is σ = 30023062692. Its totient is φ = 10007687562.

The previous prime is 20015375117. The next prime is 20015375129. The reversal of 20015375126 is 62157351002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62157351002 = 2 ⋅31078675501.

It is a junction number, because it is equal to n+sod(n) for n = 20015375092 and 20015375101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20015375129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5003843780 + ... + 5003843783.

It is an arithmetic number, because the mean of its divisors is an integer number (7505765673).

Almost surely, 2^20015375126 is an apocalyptic number.

20015375126 is a deficient number, since it is larger than the sum of its proper divisors (10007687566).

20015375126 is a wasteful number, since it uses less digits than its factorization.

20015375126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10007687565.

The product of its (nonzero) digits is 12600, while the sum is 32.

The spelling of 20015375126 in words is "twenty billion, fifteen million, three hundred seventy-five thousand, one hundred twenty-six".