20126541063 has 4 divisors (see below), whose sum is σ = 26835388088. Its totient is φ = 13417694040.

The previous prime is 20126541031. The next prime is 20126541067. The reversal of 20126541063 is 36014562102.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20126541063 - 2⁵ = 20126541031 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20126541063.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20126541067) 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 3 ways as a sum of consecutive naturals, for example, 3354423508 + ... + 3354423513.

It is an arithmetic number, because the mean of its divisors is an integer number (6708847022).

Almost surely, 2^20126541063 is an apocalyptic number.

20126541063 is a deficient number, since it is larger than the sum of its proper divisors (6708847025).

20126541063 is an equidigital number, since it uses as much as digits as its factorization.

20126541063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6708847024.

The product of its (nonzero) digits is 8640, while the sum is 30.

The spelling of 20126541063 in words is "twenty billion, one hundred twenty-six million, five hundred forty-one thousand, sixty-three".