201128443245 has 12 divisors (see below), whose sum is σ = 348622635036. Its totient is φ = 107268503040.

The previous prime is 201128443237. The next prime is 201128443253. The reversal of 201128443245 is 542344821102.

201128443245 is a `hidden beast` number, since 201 + 1 + 2 + 8 + 443 + 2 + 4 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (201128443237) and next prime (201128443253).

It can be written as a sum of positive squares in 2 ways, for example, as 102654237609 + 98474205636 = 320397^2 + 313806^2 .

It is not a de Polignac number, because 201128443245 - 2³ = 201128443237 is a prime.

It is a super-2 number, since 2×201128443245² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2234760436 + ... + 2234760525.

It is an arithmetic number, because the mean of its divisors is an integer number (29051886253).

Almost surely, 2^201128443245 is an apocalyptic number.

It is an amenable number.

201128443245 is a deficient number, since it is larger than the sum of its proper divisors (147494191791).

201128443245 is a wasteful number, since it uses less digits than its factorization.

201128443245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4469520972 (or 4469520969 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

The spelling of 201128443245 in words is "two hundred one billion, one hundred twenty-eight million, four hundred forty-three thousand, two hundred forty-five".