20411559485 has 8 divisors (see below), whose sum is σ = 24769083960. Its totient is φ = 16145772544.

The previous prime is 20411559451. The next prime is 20411559559. The reversal of 20411559485 is 58495511402.

It can be written as a sum of positive squares in 4 ways, for example, as 1404525529 + 19007033956 = 37477^2 + 137866^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20411559485 - 2¹⁸ = 20411297341 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 22933892 + ... + 22934781.

It is an arithmetic number, because the mean of its divisors is an integer number (3096135495).

Almost surely, 2^20411559485 is an apocalyptic number.

It is an amenable number.

20411559485 is a deficient number, since it is larger than the sum of its proper divisors (4357524475).

20411559485 is an equidigital number, since it uses as much as digits as its factorization.

20411559485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45868767.

The product of its (nonzero) digits is 288000, while the sum is 44.

The spelling of 20411559485 in words is "twenty billion, four hundred eleven million, five hundred fifty-nine thousand, four hundred eighty-five".