209147275001 has 16 divisors (see below), whose sum is σ = 240329564160. Its totient is φ = 178291426320.

The previous prime is 209147274997. The next prime is 209147275003. The reversal of 209147275001 is 100572741902.

It is a happy number.

It is not a de Polignac number, because 209147275001 - 2² = 209147274997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (209147275003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7230770 + ... + 7259636.

It is an arithmetic number, because the mean of its divisors is an integer number (15020597760).

Almost surely, 2^209147275001 is an apocalyptic number.

It is an amenable number.

209147275001 is a deficient number, since it is larger than the sum of its proper divisors (31182289159).

209147275001 is a wasteful number, since it uses less digits than its factorization.

209147275001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34484.

The product of its (nonzero) digits is 35280, while the sum is 38.

The spelling of 209147275001 in words is "two hundred nine billion, one hundred forty-seven million, two hundred seventy-five thousand, one".