209125571008 has 28 divisors (see below), whose sum is σ = 419092315992. Its totient is φ = 103527507200.

The previous prime is 209125570999. The next prime is 209125571051. The reversal of 209125571008 is 800175521902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16169710 + ... + 16182637.

It is an arithmetic number, because the mean of its divisors is an integer number (14967582714).

Almost surely, 2^209125571008 is an apocalyptic number.

It is an amenable number.

209125571008 is an abundant number, since it is smaller than the sum of its proper divisors (209966744984).

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

209125571008 is a wasteful number, since it uses less digits than its factorization.

209125571008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32352460 (or 32352450 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 40.

The spelling of 209125571008 in words is "two hundred nine billion, one hundred twenty-five million, five hundred seventy-one thousand, eight".