20355202011 has 8 divisors (see below), whose sum is σ = 27141037120. Its totient is φ = 13569750792.

The previous prime is 20355201949. The next prime is 20355202019. The reversal of 20355202011 is 11020255302.

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

It is not a de Polignac number, because 20355202011 - 2⁷ = 20355201883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20355202019) 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, 67560 + ... + 212778.

It is an arithmetic number, because the mean of its divisors is an integer number (3392629640).

Almost surely, 2^20355202011 is an apocalyptic number.

20355202011 is a deficient number, since it is larger than the sum of its proper divisors (6785835109).

20355202011 is a wasteful number, since it uses less digits than its factorization.

20355202011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191945.

The product of its (nonzero) digits is 600, while the sum is 21.

Adding to 20355202011 its reverse (11020255302), we get a palindrome (31375457313).

The spelling of 20355202011 in words is "twenty billion, three hundred fifty-five million, two hundred two thousand, eleven".