209192996034 has 128 divisors (see below), whose sum is σ = 534086784000. Its totient is φ = 60026054400.

The previous prime is 209192996027. The next prime is 209192996039. The reversal of 209192996034 is 430699291902.

209192996034 is a `hidden beast` number, since 2 + 0 + 9 + 1 + 9 + 29 + 9 + 603 + 4 = 666.

It is a super-2 number, since 2×209192996034² (a number of 23 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (209192996039) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 35220637 + ... + 35226575.

It is an arithmetic number, because the mean of its divisors is an integer number (4172553000).

Almost surely, 2^209192996034 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 209192996034, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267043392000).

209192996034 is an abundant number, since it is smaller than the sum of its proper divisors (324893787966).

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

209192996034 is a wasteful number, since it uses less digits than its factorization.

209192996034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9101 (or 9095 counting only the distinct ones).

The product of its (nonzero) digits is 1889568, while the sum is 54.

The spelling of 209192996034 in words is "two hundred nine billion, one hundred ninety-two million, nine hundred ninety-six thousand, thirty-four".