2158995315606 has 16 divisors (see below), whose sum is σ = 4321016570304. Its totient is φ = 719160782024.

The previous prime is 2158995315553. The next prime is 2158995315643. The reversal of 2158995315606 is 6065135998512.

It is a super-2 number, since 2×2158995315606² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2158995315606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126071520 + ... + 126088643.

It is an arithmetic number, because the mean of its divisors is an integer number (270063535644).

Almost surely, 2^{2158995315606} is an apocalyptic number.

2158995315606 is an abundant number, since it is smaller than the sum of its proper divisors (2162021254698).

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

2158995315606 is a wasteful number, since it uses less digits than its factorization.

2158995315606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252161595.

The product of its (nonzero) digits is 17496000, while the sum is 60.

The spelling of 2158995315606 in words is "two trillion, one hundred fifty-eight billion, nine hundred ninety-five million, three hundred fifteen thousand, six hundred six".