2615220521012 has 384 divisors, whose sum is σ = 5803711119360. Its totient is φ = 1016249794560.

The previous prime is 2615220520999. The next prime is 2615220521051. The reversal of 2615220521012 is 2101250225162.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4266264818 + ... + 4266265430.

It is an arithmetic number, because the mean of its divisors is an integer number (15113831040).

Almost surely, 2^{2615220521012} is an apocalyptic number.

2615220521012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2615220521012 is an abundant number, since it is smaller than the sum of its proper divisors (3188490598348).

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

2615220521012 is a wasteful number, since it uses less digits than its factorization.

2615220521012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863 (or 861 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 2615220521012 its reverse (2101250225162), we get a palindrome (4716470746174).

The spelling of 2615220521012 in words is "two trillion, six hundred fifteen billion, two hundred twenty million, five hundred twenty-one thousand, twelve".