201209772160 has 32 divisors (see below), whose sum is σ = 481017113100. Its totient is φ = 80483908608.

The previous prime is 201209772151. The next prime is 201209772221. The reversal of 201209772160 is 61277902102.

It can be written as a sum of positive squares in 2 ways, for example, as 200797194816 + 412577344 = 448104^2 + 20312^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×201209772160² (a number of 23 digits) contains 22 as substring.

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, 157194495 + ... + 157195774.

Almost surely, 2^201209772160 is an apocalyptic number.

201209772160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201209772160 is an abundant number, since it is smaller than the sum of its proper divisors (279807340940).

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

201209772160 is an equidigital number, since it uses as much as digits as its factorization.

201209772160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314390288 (or 314390276 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 37.

The spelling of 201209772160 in words is "two hundred one billion, two hundred nine million, seven hundred seventy-two thousand, one hundred sixty".