6634271953 has 4 divisors (see below), whose sum is σ = 6636564900. Its totient is φ = 6631979008.

The previous prime is 6634271927. The next prime is 6634271957. The reversal of 6634271953 is 3591724366.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3591724366 = 2 ⋅1795862183.

It can be written as a sum of positive squares in 2 ways, for example, as 1673464464 + 4960807489 = 40908^2 + 70433^2 .

It is a cyclic number.

It is not a de Polignac number, because 6634271953 - 2¹³ = 6634263761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6634271957) 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, 1142128 + ... + 1147921.

It is an arithmetic number, because the mean of its divisors is an integer number (1659141225).

Almost surely, 2^6634271953 is an apocalyptic number.

It is an amenable number.

6634271953 is a deficient number, since it is larger than the sum of its proper divisors (2292947).

6634271953 is a wasteful number, since it uses less digits than its factorization.

6634271953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2292946.

The product of its digits is 816480, while the sum is 46.

The square root of 6634271953 is about 81451.0402204907. The cubic root of 6634271953 is about 1879.0186474203.

The spelling of 6634271953 in words is "six billion, six hundred thirty-four million, two hundred seventy-one thousand, nine hundred fifty-three".