20111415136 has 24 divisors (see below), whose sum is σ = 39653223624. Its totient is φ = 10040755200.

The previous prime is 20111415131. The next prime is 20111415221. The reversal of 20111415136 is 63151411102.

It is a super-3 number, since 3×20111415136³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20111415136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111415131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 445390 + ... + 488461.

It is an arithmetic number, because the mean of its divisors is an integer number (1652217651).

Almost surely, 2^20111415136 is an apocalyptic number.

It is an amenable number.

20111415136 is a deficient number, since it is larger than the sum of its proper divisors (19541808488).

20111415136 is an equidigital number, since it uses as much as digits as its factorization.

20111415136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934534 (or 934526 counting only the distinct ones).

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

Adding to 20111415136 its reverse (63151411102), we get a palindrome (83262826238).

The spelling of 20111415136 in words is "twenty billion, one hundred eleven million, four hundred fifteen thousand, one hundred thirty-six".