20573361001 has 4 divisors (see below), whose sum is σ = 20588936404. Its totient is φ = 20557785600.

The previous prime is 20573360981. The next prime is 20573361037. The reversal of 20573361001 is 10016337502.

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 15762551401 + 4810809600 = 125549^2 + 69360^2 .

It is a cyclic number.

It is not a de Polignac number, because 20573361001 - 2¹³ = 20573352809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20573362001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7785720 + ... + 7788361.

It is an arithmetic number, because the mean of its divisors is an integer number (5147234101).

Almost surely, 2^20573361001 is an apocalyptic number.

It is an amenable number.

20573361001 is a deficient number, since it is larger than the sum of its proper divisors (15575403).

20573361001 is a wasteful number, since it uses less digits than its factorization.

20573361001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15575402.

The product of its (nonzero) digits is 3780, while the sum is 28.

Adding to 20573361001 its reverse (10016337502), we get a palindrome (30589698503).

The spelling of 20573361001 in words is "twenty billion, five hundred seventy-three million, three hundred sixty-one thousand, one".