2115115456321 has 8 divisors (see below), whose sum is σ = 2417285467584. Its totient is φ = 1812948110160.

The previous prime is 2115115456283. The next prime is 2115115456327. The reversal of 2115115456321 is 1236545115112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2115115456321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2115115456327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1506951 + ... + 2549731.

It is an arithmetic number, because the mean of its divisors is an integer number (302160683448).

Almost surely, 2^{2115115456321} is an apocalyptic number.

It is an amenable number.

2115115456321 is a deficient number, since it is larger than the sum of its proper divisors (302170011263).

2115115456321 is a wasteful number, since it uses less digits than its factorization.

2115115456321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332551.

The product of its digits is 36000, while the sum is 37.

The spelling of 2115115456321 in words is "two trillion, one hundred fifteen billion, one hundred fifteen million, four hundred fifty-six thousand, three hundred twenty-one".