209326430070 has 48 divisors (see below), whose sum is σ = 572893392240. Its totient is φ = 52882466112.

The previous prime is 209326430041. The next prime is 209326430077. The reversal of 209326430070 is 70034623902.

It is a happy number.

209326430070 is a `hidden beast` number, since 2 + 0 + 9 + 3 + 2 + 643 + 0 + 0 + 7 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209326430077) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 61204849 + ... + 61208268.

It is an arithmetic number, because the mean of its divisors is an integer number (11935279005).

Almost surely, 2^209326430070 is an apocalyptic number.

209326430070 is an abundant number, since it is smaller than the sum of its proper divisors (363566962170).

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

209326430070 is a wasteful number, since it uses less digits than its factorization.

209326430070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122413149 (or 122413146 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The spelling of 209326430070 in words is "two hundred nine billion, three hundred twenty-six million, four hundred thirty thousand, seventy".