4251759661 has 4 divisors (see below), whose sum is σ = 4282348000. Its totient is φ = 4221171324.

The previous prime is 4251759649. The next prime is 4251759671. The reversal of 4251759661 is 1669571524.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4251759661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4251759601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15293961 + ... + 15294238.

It is an arithmetic number, because the mean of its divisors is an integer number (1070587000).

Almost surely, 2^4251759661 is an apocalyptic number.

It is an amenable number.

4251759661 is a deficient number, since it is larger than the sum of its proper divisors (30588339).

4251759661 is a wasteful number, since it uses less digits than its factorization.

4251759661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30588338.

The product of its digits is 453600, while the sum is 46.

The square root of 4251759661 is about 65205.5186391459. The cubic root of 4251759661 is about 1620.0294234609.

The spelling of 4251759661 in words is "four billion, two hundred fifty-one million, seven hundred fifty-nine thousand, six hundred sixty-one".