4150571661 has 12 divisors (see below), whose sum is σ = 6000132892. Its totient is φ = 2764803456.

The previous prime is 4150571647. The next prime is 4150571671. The reversal of 4150571661 is 1661750514.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3712464900 + 438106761 = 60930^2 + 20931^2 .

It is not a de Polignac number, because 4150571661 - 2¹⁰ = 4150570637 is a prime.

It is a super-3 number, since 3×4150571661³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4150571671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 175276 + ... + 197541.

Almost surely, 2^4150571661 is an apocalyptic number.

It is an amenable number.

4150571661 is a deficient number, since it is larger than the sum of its proper divisors (1849561231).

4150571661 is a wasteful number, since it uses less digits than its factorization.

4150571661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374060 (or 374057 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 4150571661 is about 64424.9304306958. The cubic root of 4150571661 is about 1607.0743598218.

The spelling of 4150571661 in words is "four billion, one hundred fifty million, five hundred seventy-one thousand, six hundred sixty-one".