209714162994 has 256 divisors, whose sum is σ = 578302771200. Its totient is φ = 54997766208.

The previous prime is 209714162981. The next prime is 209714163007. The reversal of 209714162994 is 499261417902.

209714162994 is a `hidden beast` number, since 2 + 0 + 9 + 7 + 1 + 4 + 1 + 629 + 9 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (209714162981) and next prime (209714163007).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 209714162994.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 39218229 + ... + 39223575.

It is an arithmetic number, because the mean of its divisors is an integer number (2258995200).

Almost surely, 2^209714162994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 209714162994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289151385600).

209714162994 is an abundant number, since it is smaller than the sum of its proper divisors (368588608206).

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

209714162994 is a wasteful number, since it uses less digits than its factorization.

209714162994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5554 (or 5548 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The spelling of 209714162994 in words is "two hundred nine billion, seven hundred fourteen million, one hundred sixty-two thousand, nine hundred ninety-four".