20201328126 has 64 divisors (see below), whose sum is σ = 52959989760. Its totient is φ = 5585617440.

The previous prime is 20201328019. The next prime is 20201328127. The reversal of 20201328126 is 62182310202.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 20201328126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201328127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 850261 + ... + 873696.

It is an arithmetic number, because the mean of its divisors is an integer number (827499840).

Almost surely, 2^20201328126 is an apocalyptic number.

20201328126 is an abundant number, since it is smaller than the sum of its proper divisors (32758661634).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20201328126 is a wasteful number, since it uses less digits than its factorization.

20201328126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1724006 (or 1724000 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 20201328126 its reverse (62182310202), we get a palindrome (82383638328).

The spelling of 20201328126 in words is "twenty billion, two hundred one million, three hundred twenty-eight thousand, one hundred twenty-six".