2117226078 has 24 divisors (see below), whose sum is σ = 5004353016. Its totient is φ = 641583600.

The previous prime is 2117226077. The next prime is 2117226109. The reversal of 2117226078 is 8706227112.

2117226078 is a `hidden beast` number, since 21 + 1 + 7 + 22 + 607 + 8 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2117226077) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5346333 + ... + 5346728.

It is an arithmetic number, because the mean of its divisors is an integer number (208514709).

Almost surely, 2^2117226078 is an apocalyptic number.

2117226078 is an abundant number, since it is smaller than the sum of its proper divisors (2887126938).

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

2117226078 is a wasteful number, since it uses less digits than its factorization.

2117226078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10693080 (or 10693077 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 2117226078 is about 46013.3250048288. The cubic root of 2117226078 is about 1284.0711194485.

The spelling of 2117226078 in words is "two billion, one hundred seventeen million, two hundred twenty-six thousand, seventy-eight".