2115710170056 has 128 divisors (see below), whose sum is σ = 6722494752000. Its totient is φ = 603952713216.

The previous prime is 2115710170051. The next prime is 2115710170069. The reversal of 2115710170056 is 6500710175112.

It is a happy number.

2115710170056 is a `hidden beast` number, since 2 + 11 + 571 + 0 + 1 + 70 + 0 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 2115710170056.

It is not an unprimeable number, because it can be changed into a prime (2115710170051) 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, 1087350 + ... + 2326746.

It is an arithmetic number, because the mean of its divisors is an integer number (52519490250).

Almost surely, 2^{2115710170056} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2115710170056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3361247376000).

2115710170056 is an abundant number, since it is smaller than the sum of its proper divisors (4606784581944).

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

2115710170056 is a wasteful number, since it uses less digits than its factorization.

2115710170056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1240548 (or 1240538 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 36.

The spelling of 2115710170056 in words is "two trillion, one hundred fifteen billion, seven hundred ten million, one hundred seventy thousand, fifty-six".