20452845501 has 36 divisors (see below), whose sum is σ = 32557035420. Its totient is φ = 12363542400.

The previous prime is 20452845463. The next prime is 20452845509. The reversal of 20452845501 is 10554825402.

20452845501 is a `hidden beast` number, since 20 + 4 + 5 + 2 + 84 + 550 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6751908900 + 13700936601 = 82170^2 + 117051^2 .

It is not a de Polignac number, because 20452845501 - 2⁶ = 20452845437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20452845509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 399481 + ... + 447761.

It is an arithmetic number, because the mean of its divisors is an integer number (904362095).

Almost surely, 2^20452845501 is an apocalyptic number.

It is an amenable number.

20452845501 is a deficient number, since it is larger than the sum of its proper divisors (12104189919).

20452845501 is a wasteful number, since it uses less digits than its factorization.

20452845501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48698 (or 48684 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 36.

The spelling of 20452845501 in words is "twenty billion, four hundred fifty-two million, eight hundred forty-five thousand, five hundred one".