20560001001 has 8 divisors (see below), whose sum is σ = 28605218880. Its totient is φ = 13110725232.

The previous prime is 20560000969. The next prime is 20560001003. The reversal of 20560001001 is 10010006502.

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

It is not a de Polignac number, because 20560001001 - 2⁵ = 20560000969 is a prime.

It is a super-2 number, since 2×20560001001² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20560001003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148985446 + ... + 148985583.

It is an arithmetic number, because the mean of its divisors is an integer number (3575652360).

Almost surely, 2^20560001001 is an apocalyptic number.

It is an amenable number.

20560001001 is a deficient number, since it is larger than the sum of its proper divisors (8045217879).

20560001001 is a wasteful number, since it uses less digits than its factorization.

20560001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297971055.

The product of its (nonzero) digits is 60, while the sum is 15.

Adding to 20560001001 its reverse (10010006502), we get a palindrome (30570007503).

The spelling of 20560001001 in words is "twenty billion, five hundred sixty million, one thousand, one".