20500315613011 has 16 divisors (see below), whose sum is σ = 22296940591968. Its totient is φ = 18735091488000.

The previous prime is 20500315613009. The next prime is 20500315613023. The reversal of 20500315613011 is 11031651300502.

It is a cyclic number.

It is not a de Polignac number, because 20500315613011 - 2¹ = 20500315613009 is a prime.

It is a super-2 number, since 2×20500315613011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20500315613051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27223876 + ... + 27966766.

It is an arithmetic number, because the mean of its divisors is an integer number (1393558786998).

Almost surely, 2^{20500315613011} is an apocalyptic number.

20500315613011 is a deficient number, since it is larger than the sum of its proper divisors (1796624978957).

20500315613011 is a wasteful number, since it uses less digits than its factorization.

20500315613011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764022.

The product of its (nonzero) digits is 2700, while the sum is 28.

Adding to 20500315613011 its reverse (11031651300502), we get a palindrome (31531966913513).

The spelling of 20500315613011 in words is "twenty trillion, five hundred billion, three hundred fifteen million, six hundred thirteen thousand, eleven".