20010241505 has 4 divisors (see below), whose sum is σ = 24012289812. Its totient is φ = 16008193200.

The previous prime is 20010241487. The next prime is 20010241513. The reversal of 20010241505 is 50514201002.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10612296256 + 9397945249 = 103016^2 + 96943^2 .

It is not a de Polignac number, because 20010241505 - 2⁸ = 20010241249 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2001024146 + ... + 2001024155.

It is an arithmetic number, because the mean of its divisors is an integer number (6003072453).

Almost surely, 2^20010241505 is an apocalyptic number.

It is an amenable number.

20010241505 is a deficient number, since it is larger than the sum of its proper divisors (4002048307).

20010241505 is an equidigital number, since it uses as much as digits as its factorization.

20010241505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4002048306.

The product of its (nonzero) digits is 400, while the sum is 20.

Adding to 20010241505 its reverse (50514201002), we get a palindrome (70524442507).

The spelling of 20010241505 in words is "twenty billion, ten million, two hundred forty-one thousand, five hundred five".