209527274149 has 16 divisors (see below), whose sum is σ = 223069809600. Its totient is φ = 196249049856.

The previous prime is 209527274119. The next prime is 209527274221. The reversal of 209527274149 is 941472725902.

It is a cyclic number.

It is not a de Polignac number, because 209527274149 - 2²¹ = 209525176997 is a prime.

It is a super-2 number, since 2×209527274149² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 209527274096 and 209527274105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209527274119) 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, 410317 + ... + 766429.

It is an arithmetic number, because the mean of its divisors is an integer number (13941863100).

Almost surely, 2^209527274149 is an apocalyptic number.

It is an amenable number.

209527274149 is a deficient number, since it is larger than the sum of its proper divisors (13542535451).

209527274149 is a wasteful number, since it uses less digits than its factorization.

209527274149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356484.

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 209527274149 in words is "two hundred nine billion, five hundred twenty-seven million, two hundred seventy-four thousand, one hundred forty-nine".