20903696113 has 2 divisors, whose sum is σ = 20903696114. Its totient is φ = 20903696112.

The previous prime is 20903696071. The next prime is 20903696137. The reversal of 20903696113 is 31169630902.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14588533089 + 6315163024 = 120783^2 + 79468^2 .

It is a cyclic number.

It is not a de Polignac number, because 20903696113 - 2²¹ = 20901598961 is a prime.

It is a super-2 number, since 2×20903696113² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20903696153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10451848056 + 10451848057.

It is an arithmetic number, because the mean of its divisors is an integer number (10451848057).

Almost surely, 2^20903696113 is an apocalyptic number.

It is an amenable number.

20903696113 is a deficient number, since it is larger than the sum of its proper divisors (1).

20903696113 is an equidigital number, since it uses as much as digits as its factorization.

20903696113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488, while the sum is 40.

The spelling of 20903696113 in words is "twenty billion, nine hundred three million, six hundred ninety-six thousand, one hundred thirteen".