6461272747 has 2 divisors, whose sum is σ = 6461272748. Its totient is φ = 6461272746.

The previous prime is 6461272733. The next prime is 6461272757. The reversal of 6461272747 is 7472721646.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6461272747 is a prime.

It is a super-2 number, since 2×6461272747² = 83496091022249852018, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6461272697 and 6461272706.

It is not a weakly prime, because it can be changed into another prime (6461272757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3230636373 + 3230636374.

It is an arithmetic number, because the mean of its divisors is an integer number (3230636374).

Almost surely, 2^6461272747 is an apocalyptic number.

6461272747 is a deficient number, since it is larger than the sum of its proper divisors (1).

6461272747 is an equidigital number, since it uses as much as digits as its factorization.

6461272747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 790272, while the sum is 46.

The square root of 6461272747 is about 80382.0424410826. The cubic root of 6461272747 is about 1862.5417851803.

The spelling of 6461272747 in words is "six billion, four hundred sixty-one million, two hundred seventy-two thousand, seven hundred forty-seven".