6261504657 has 16 divisors (see below), whose sum is σ = 8421741120. Its totient is φ = 4137936192.

The previous prime is 6261504647. The next prime is 6261504671. The reversal of 6261504657 is 7564051626.

It is not a de Polignac number, because 6261504657 - 2⁸ = 6261504401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6261504607) 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 15 ways as a sum of consecutive naturals, for example, 173763 + ... + 206679.

It is an arithmetic number, because the mean of its divisors is an integer number (526358820).

Almost surely, 2^6261504657 is an apocalyptic number.

It is an amenable number.

6261504657 is a deficient number, since it is larger than the sum of its proper divisors (2160236463).

6261504657 is a wasteful number, since it uses less digits than its factorization.

6261504657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33472.

The product of its (nonzero) digits is 302400, while the sum is 42.

The square root of 6261504657 is about 79129.6698906295. The cubic root of 6261504657 is about 1843.1452837090.

The spelling of 6261504657 in words is "six billion, two hundred sixty-one million, five hundred four thousand, six hundred fifty-seven".