6461751757 has 4 divisors (see below), whose sum is σ = 6461923456. Its totient is φ = 6461580060.

The previous prime is 6461751749. The next prime is 6461751827. The reversal of 6461751757 is 7571571646.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7571571646 = 2 ⋅3785785823.

It is a cyclic number.

It is not a de Polignac number, because 6461751757 - 2³ = 6461751749 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6461751757.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6461751157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2283 + ... + 113704.

It is an arithmetic number, because the mean of its divisors is an integer number (1615480864).

Almost surely, 2^6461751757 is an apocalyptic number.

It is an amenable number.

6461751757 is a deficient number, since it is larger than the sum of its proper divisors (171699).

6461751757 is a wasteful number, since it uses less digits than its factorization.

6461751757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171698.

The product of its digits is 1234800, while the sum is 49.

The square root of 6461751757 is about 80385.0219692699. The cubic root of 6461751757 is about 1862.5878108953.

The spelling of 6461751757 in words is "six billion, four hundred sixty-one million, seven hundred fifty-one thousand, seven hundred fifty-seven".