20111513308 has 6 divisors (see below), whose sum is σ = 35195148296. Its totient is φ = 10055756652.

The previous prime is 20111513299. The next prime is 20111513309. The reversal of 20111513308 is 80331511102.

It is a super-2 number, since 2×20111513308² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111513309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2513939160 + ... + 2513939167.

Almost surely, 2^20111513308 is an apocalyptic number.

It is an amenable number.

20111513308 is a deficient number, since it is larger than the sum of its proper divisors (15083634988).

20111513308 is a wasteful number, since it uses less digits than its factorization.

20111513308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5027878331 (or 5027878329 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The spelling of 20111513308 in words is "twenty billion, one hundred eleven million, five hundred thirteen thousand, three hundred eight".