2015411333820 has 96 divisors (see below), whose sum is σ = 5767766803008. Its totient is φ = 525638909952.

The previous prime is 2015411333791. The next prime is 2015411333821. The reversal of 2015411333820 is 283331145102.

It is a super-2 number, since 2×2015411333820² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2015411333821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8412 + ... + 2007708.

It is an arithmetic number, because the mean of its divisors is an integer number (60080904198).

Almost surely, 2^{2015411333820} is an apocalyptic number.

2015411333820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2015411333820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2883883401504).

2015411333820 is an abundant number, since it is smaller than the sum of its proper divisors (3752355469188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2015411333820 is a wasteful number, since it uses less digits than its factorization.

2015411333820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999679 (or 1999677 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

Adding to 2015411333820 its reverse (283331145102), we get a palindrome (2298742478922).

The spelling of 2015411333820 in words is "two trillion, fifteen billion, four hundred eleven million, three hundred thirty-three thousand, eight hundred twenty".