20035215011 has 6 divisors (see below), whose sum is σ = 23306270580. Its totient is φ = 17173041396.

The previous prime is 20035215001. The next prime is 20035215023. The reversal of 20035215011 is 11051253002.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-20035215011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20035215001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 204440921 + ... + 204441018.

It is an arithmetic number, because the mean of its divisors is an integer number (3884378430).

Almost surely, 2^20035215011 is an apocalyptic number.

20035215011 is a deficient number, since it is larger than the sum of its proper divisors (3271055569).

20035215011 is an equidigital number, since it uses as much as digits as its factorization.

20035215011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408881953 (or 408881946 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

Adding to 20035215011 its reverse (11051253002), we get a palindrome (31086468013).

The spelling of 20035215011 in words is "twenty billion, thirty-five million, two hundred fifteen thousand, eleven".