4251713661 has 36 divisors (see below), whose sum is σ = 6743951136. Its totient is φ = 2579522400.

The previous prime is 4251713639. The next prime is 4251713677. The reversal of 4251713661 is 1663171524.

4251713661 is a `hidden beast` number, since 4 + 2 + 517 + 136 + 6 + 1 = 666.

It is not a de Polignac number, because 4251713661 - 2⁵ = 4251713629 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4251713611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 88306 + ... + 127676.

It is an arithmetic number, because the mean of its divisors is an integer number (187331976).

Almost surely, 2^4251713661 is an apocalyptic number.

It is an amenable number.

4251713661 is a deficient number, since it is larger than the sum of its proper divisors (2492237475).

4251713661 is a wasteful number, since it uses less digits than its factorization.

4251713661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39474 (or 39458 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 4251713661 is about 65205.1659073114. The cubic root of 4251713661 is about 1620.0235810468.

The spelling of 4251713661 in words is "four billion, two hundred fifty-one million, seven hundred thirteen thousand, six hundred sixty-one".