9915155513345 has 16 divisors (see below), whose sum is σ = 11913320039040. Its totient is φ = 7922041824384.

The previous prime is 9915155513309. The next prime is 9915155513353. The reversal of 9915155513345 is 5433155515199.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9915155513345 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12121196 + ... + 12913314.

It is an arithmetic number, because the mean of its divisors is an integer number (744582502440).

Almost surely, 2^{9915155513345} is an apocalyptic number.

It is an amenable number.

9915155513345 is a deficient number, since it is larger than the sum of its proper divisors (1998164525695).

9915155513345 is a wasteful number, since it uses less digits than its factorization.

9915155513345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795304.

The product of its digits is 9112500, while the sum is 56.

The spelling of 9915155513345 in words is "nine trillion, nine hundred fifteen billion, one hundred fifty-five million, five hundred thirteen thousand, three hundred forty-five".