20411012552015 has 16 divisors (see below), whose sum is σ = 25337971497600. Its totient is φ = 15765646321152.

The previous prime is 20411012552011. The next prime is 20411012552083. The reversal of 20411012552015 is 51025521011402.

It is a cyclic number.

It is not a de Polignac number, because 20411012552015 - 2² = 20411012552011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20411012552011) 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, 28608314 + ... + 29313096.

It is an arithmetic number, because the mean of its divisors is an integer number (1583623218600).

Almost surely, 2^{20411012552015} is an apocalyptic number.

20411012552015 is a deficient number, since it is larger than the sum of its proper divisors (4926958945585).

20411012552015 is a wasteful number, since it uses less digits than its factorization.

20411012552015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904546.

The product of its (nonzero) digits is 4000, while the sum is 29.

Adding to 20411012552015 its reverse (51025521011402), we get a palindrome (71436533563417).

The spelling of 20411012552015 in words is "twenty trillion, four hundred eleven billion, twelve million, five hundred fifty-two thousand, fifteen".