201649744328 has 32 divisors (see below), whose sum is σ = 380928727800. Its totient is φ = 100069043712.

The previous prime is 201649744319. The next prime is 201649744363. The reversal of 201649744328 is 823447946102.

It can be written as a sum of positive squares in 4 ways, for example, as 162278454244 + 39371290084 = 402838^2 + 198422^2 .

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6592526 + ... + 6623042.

Almost surely, 2^201649744328 is an apocalyptic number.

It is an amenable number.

201649744328 is a deficient number, since it is larger than the sum of its proper divisors (179278983472).

201649744328 is a wasteful number, since it uses less digits than its factorization.

201649744328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36689 (or 36685 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 50.

The spelling of 201649744328 in words is "two hundred one billion, six hundred forty-nine million, seven hundred forty-four thousand, three hundred twenty-eight".