6461371751 has 2 divisors, whose sum is σ = 6461371752. Its totient is φ = 6461371750.

The previous prime is 6461371729. The next prime is 6461371759. The reversal of 6461371751 is 1571731646.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6461371751 - 2⁶ = 6461371687 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6461371699 and 6461371708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6461371759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3230685875 + 3230685876.

It is an arithmetic number, because the mean of its divisors is an integer number (3230685876).

Almost surely, 2^6461371751 is an apocalyptic number.

6461371751 is a deficient number, since it is larger than the sum of its proper divisors (1).

6461371751 is an equidigital number, since it uses as much as digits as its factorization.

6461371751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 41.

The square root of 6461371751 is about 80382.6582727892. The cubic root of 6461371751 is about 1862.5512981742.

The spelling of 6461371751 in words is "six billion, four hundred sixty-one million, three hundred seventy-one thousand, seven hundred fifty-one".