13620064326815 has 32 divisors (see below), whose sum is σ = 17484803294400. Its totient is φ = 10154995246080.

The previous prime is 13620064326811. The next prime is 13620064326829. The reversal of 13620064326815 is 51862346002631.

It is not a de Polignac number, because 13620064326815 - 2² = 13620064326811 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13620064326815.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13620064326811) 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, 173345 + ... + 5222085.

It is an arithmetic number, because the mean of its divisors is an integer number (546400102950).

Almost surely, 2^{13620064326815} is an apocalyptic number.

13620064326815 is a deficient number, since it is larger than the sum of its proper divisors (3864738967585).

13620064326815 is a wasteful number, since it uses less digits than its factorization.

13620064326815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5049227.

The product of its (nonzero) digits is 1244160, while the sum is 47.

The spelling of 13620064326815 in words is "thirteen trillion, six hundred twenty billion, sixty-four million, three hundred twenty-six thousand, eight hundred fifteen".