6551618953 has 24 divisors (see below), whose sum is σ = 7302110400. Its totient is φ = 5828867520.

The previous prime is 6551618947. The next prime is 6551618959. The reversal of 6551618953 is 3598161556.

It is an interprime number because it is at equal distance from previous prime (6551618947) and next prime (6551618959).

It is not a de Polignac number, because 6551618953 - 2²¹ = 6549521801 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6551618897 and 6551618906.

It is not an unprimeable number, because it can be changed into a prime (6551618959) 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 23 ways as a sum of consecutive naturals, for example, 33256851 + ... + 33257047.

It is an arithmetic number, because the mean of its divisors is an integer number (304254600).

Almost surely, 2^6551618953 is an apocalyptic number.

It is an amenable number.

6551618953 is a deficient number, since it is larger than the sum of its proper divisors (750491447).

6551618953 is a wasteful number, since it uses less digits than its factorization.

6551618953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657 (or 460 counting only the distinct ones).

The product of its digits is 972000, while the sum is 49.

The square root of 6551618953 is about 80942.0715882661. The cubic root of 6551618953 is about 1871.1827717161.

The spelling of 6551618953 in words is "six billion, five hundred fifty-one million, six hundred eighteen thousand, nine hundred fifty-three".